diff --git a/libs/SDL2_mixer/SRB2NOTE.txt b/libs/SDL2_mixer/SRB2NOTE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7053c44f66de850cde4d6448797dc6a443e29f4b
--- /dev/null
+++ b/libs/SDL2_mixer/SRB2NOTE.txt
@@ -0,0 +1,15 @@
+# SDL Mixer Development Libaries
+
+Download both the VC and MinGW packages and extract them here.
+
+https://www.libsdl.org/projects/SDL_mixer/
+
+## VC Package
+
+* include
+* lib
+
+## MinGW Package
+
+* i686-w64-mingw32
+* x86_64-w64-mingw32
diff --git a/libs/SDL2_mixer/include/SDL_mixer.h b/libs/SDL2_mixer/include/SDL_mixer.h
new file mode 100644
index 0000000000000000000000000000000000000000..009d8a2da6725c58c87a11b09e08ee5bc8e6a2da
--- /dev/null
+++ b/libs/SDL2_mixer/include/SDL_mixer.h
@@ -0,0 +1,651 @@
+/*
+ SDL_mixer: An audio mixer library based on the SDL library
+ Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_MIXER_H_
+#define SDL_MIXER_H_
+
+#include "SDL_stdinc.h"
+#include "SDL_rwops.h"
+#include "SDL_audio.h"
+#include "SDL_endian.h"
+#include "SDL_version.h"
+#include "begin_code.h"
+
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
+*/
+#define SDL_MIXER_MAJOR_VERSION 2
+#define SDL_MIXER_MINOR_VERSION 0
+#define SDL_MIXER_PATCHLEVEL 4
+
+/* This macro can be used to fill a version structure with the compile-time
+ * version of the SDL_mixer library.
+ */
+#define SDL_MIXER_VERSION(X) \
+{ \
+ (X)->major = SDL_MIXER_MAJOR_VERSION; \
+ (X)->minor = SDL_MIXER_MINOR_VERSION; \
+ (X)->patch = SDL_MIXER_PATCHLEVEL; \
+}
+
+/* Backwards compatibility */
+#define MIX_MAJOR_VERSION SDL_MIXER_MAJOR_VERSION
+#define MIX_MINOR_VERSION SDL_MIXER_MINOR_VERSION
+#define MIX_PATCHLEVEL SDL_MIXER_PATCHLEVEL
+#define MIX_VERSION(X) SDL_MIXER_VERSION(X)
+
+/**
+ * This is the version number macro for the current SDL_mixer version.
+ */
+#define SDL_MIXER_COMPILEDVERSION \
+ SDL_VERSIONNUM(SDL_MIXER_MAJOR_VERSION, SDL_MIXER_MINOR_VERSION, SDL_MIXER_PATCHLEVEL)
+
+/**
+ * This macro will evaluate to true if compiled with SDL_mixer at least X.Y.Z.
+ */
+#define SDL_MIXER_VERSION_ATLEAST(X, Y, Z) \
+ (SDL_MIXER_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z))
+
+/* This function gets the version of the dynamically linked SDL_mixer library.
+ it should NOT be used to fill a version structure, instead you should
+ use the SDL_MIXER_VERSION() macro.
+ */
+extern DECLSPEC const SDL_version * SDLCALL Mix_Linked_Version(void);
+
+typedef enum
+{
+ MIX_INIT_FLAC = 0x00000001,
+ MIX_INIT_MOD = 0x00000002,
+ MIX_INIT_MP3 = 0x00000008,
+ MIX_INIT_OGG = 0x00000010,
+ MIX_INIT_MID = 0x00000020,
+ MIX_INIT_OPUS = 0x00000040
+} MIX_InitFlags;
+
+/* Loads dynamic libraries and prepares them for use. Flags should be
+ one or more flags from MIX_InitFlags OR'd together.
+ It returns the flags successfully initialized, or 0 on failure.
+ */
+extern DECLSPEC int SDLCALL Mix_Init(int flags);
+
+/* Unloads libraries loaded with Mix_Init */
+extern DECLSPEC void SDLCALL Mix_Quit(void);
+
+
+/* The default mixer has 8 simultaneous mixing channels */
+#ifndef MIX_CHANNELS
+#define MIX_CHANNELS 8
+#endif
+
+/* Good default values for a PC soundcard */
+#define MIX_DEFAULT_FREQUENCY 22050
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+#define MIX_DEFAULT_FORMAT AUDIO_S16LSB
+#else
+#define MIX_DEFAULT_FORMAT AUDIO_S16MSB
+#endif
+#define MIX_DEFAULT_CHANNELS 2
+#define MIX_MAX_VOLUME SDL_MIX_MAXVOLUME /* Volume of a chunk */
+
+/* The internal format for an audio chunk */
+typedef struct Mix_Chunk {
+ int allocated;
+ Uint8 *abuf;
+ Uint32 alen;
+ Uint8 volume; /* Per-sample volume, 0-128 */
+} Mix_Chunk;
+
+/* The different fading types supported */
+typedef enum {
+ MIX_NO_FADING,
+ MIX_FADING_OUT,
+ MIX_FADING_IN
+} Mix_Fading;
+
+/* These are types of music files (not libraries used to load them) */
+typedef enum {
+ MUS_NONE,
+ MUS_CMD,
+ MUS_WAV,
+ MUS_MOD,
+ MUS_MID,
+ MUS_OGG,
+ MUS_MP3,
+ MUS_MP3_MAD_UNUSED,
+ MUS_FLAC,
+ MUS_MODPLUG_UNUSED,
+ MUS_OPUS
+} Mix_MusicType;
+
+/* The internal format for a music chunk interpreted via mikmod */
+typedef struct _Mix_Music Mix_Music;
+
+/* Open the mixer with a certain audio format */
+extern DECLSPEC int SDLCALL Mix_OpenAudio(int frequency, Uint16 format, int channels, int chunksize);
+
+/* Open the mixer with specific device and certain audio format */
+extern DECLSPEC int SDLCALL Mix_OpenAudioDevice(int frequency, Uint16 format, int channels, int chunksize, const char* device, int allowed_changes);
+
+/* Dynamically change the number of channels managed by the mixer.
+ If decreasing the number of channels, the upper channels are
+ stopped.
+ This function returns the new number of allocated channels.
+ */
+extern DECLSPEC int SDLCALL Mix_AllocateChannels(int numchans);
+
+/* Find out what the actual audio device parameters are.
+ This function returns 1 if the audio has been opened, 0 otherwise.
+ */
+extern DECLSPEC int SDLCALL Mix_QuerySpec(int *frequency,Uint16 *format,int *channels);
+
+/* Load a wave file or a music (.mod .s3m .it .xm) file */
+extern DECLSPEC Mix_Chunk * SDLCALL Mix_LoadWAV_RW(SDL_RWops *src, int freesrc);
+#define Mix_LoadWAV(file) Mix_LoadWAV_RW(SDL_RWFromFile(file, "rb"), 1)
+extern DECLSPEC Mix_Music * SDLCALL Mix_LoadMUS(const char *file);
+
+/* Load a music file from an SDL_RWop object (Ogg and MikMod specific currently)
+ Matt Campbell (matt@campbellhome.dhs.org) April 2000 */
+extern DECLSPEC Mix_Music * SDLCALL Mix_LoadMUS_RW(SDL_RWops *src, int freesrc);
+
+/* Load a music file from an SDL_RWop object assuming a specific format */
+extern DECLSPEC Mix_Music * SDLCALL Mix_LoadMUSType_RW(SDL_RWops *src, Mix_MusicType type, int freesrc);
+
+/* Load a wave file of the mixer format from a memory buffer */
+extern DECLSPEC Mix_Chunk * SDLCALL Mix_QuickLoad_WAV(Uint8 *mem);
+
+/* Load raw audio data of the mixer format from a memory buffer */
+extern DECLSPEC Mix_Chunk * SDLCALL Mix_QuickLoad_RAW(Uint8 *mem, Uint32 len);
+
+/* Free an audio chunk previously loaded */
+extern DECLSPEC void SDLCALL Mix_FreeChunk(Mix_Chunk *chunk);
+extern DECLSPEC void SDLCALL Mix_FreeMusic(Mix_Music *music);
+
+/* Get a list of chunk/music decoders that this build of SDL_mixer provides.
+ This list can change between builds AND runs of the program, if external
+ libraries that add functionality become available.
+ You must successfully call Mix_OpenAudio() before calling these functions.
+ This API is only available in SDL_mixer 1.2.9 and later.
+
+ // usage...
+ int i;
+ const int total = Mix_GetNumChunkDecoders();
+ for (i = 0; i < total; i++)
+ printf("Supported chunk decoder: [%s]\n", Mix_GetChunkDecoder(i));
+
+ Appearing in this list doesn't promise your specific audio file will
+ decode...but it's handy to know if you have, say, a functioning Timidity
+ install.
+
+ These return values are static, read-only data; do not modify or free it.
+ The pointers remain valid until you call Mix_CloseAudio().
+*/
+extern DECLSPEC int SDLCALL Mix_GetNumChunkDecoders(void);
+extern DECLSPEC const char * SDLCALL Mix_GetChunkDecoder(int index);
+extern DECLSPEC SDL_bool SDLCALL Mix_HasChunkDecoder(const char *name);
+extern DECLSPEC int SDLCALL Mix_GetNumMusicDecoders(void);
+extern DECLSPEC const char * SDLCALL Mix_GetMusicDecoder(int index);
+extern DECLSPEC SDL_bool SDLCALL Mix_HasMusicDecoder(const char *name);
+
+/* Find out the music format of a mixer music, or the currently playing
+ music, if 'music' is NULL.
+*/
+extern DECLSPEC Mix_MusicType SDLCALL Mix_GetMusicType(const Mix_Music *music);
+
+/* Set a function that is called after all mixing is performed.
+ This can be used to provide real-time visual display of the audio stream
+ or add a custom mixer filter for the stream data.
+*/
+extern DECLSPEC void SDLCALL Mix_SetPostMix(void (SDLCALL *mix_func)(void *udata, Uint8 *stream, int len), void *arg);
+
+/* Add your own music player or additional mixer function.
+ If 'mix_func' is NULL, the default music player is re-enabled.
+ */
+extern DECLSPEC void SDLCALL Mix_HookMusic(void (SDLCALL *mix_func)(void *udata, Uint8 *stream, int len), void *arg);
+
+/* Add your own callback for when the music has finished playing or when it is
+ * stopped from a call to Mix_HaltMusic.
+ */
+extern DECLSPEC void SDLCALL Mix_HookMusicFinished(void (SDLCALL *music_finished)(void));
+
+/* Get a pointer to the user data for the current music hook */
+extern DECLSPEC void * SDLCALL Mix_GetMusicHookData(void);
+
+/*
+ * Add your own callback when a channel has finished playing. NULL
+ * to disable callback. The callback may be called from the mixer's audio
+ * callback or it could be called as a result of Mix_HaltChannel(), etc.
+ * do not call SDL_LockAudio() from this callback; you will either be
+ * inside the audio callback, or SDL_mixer will explicitly lock the audio
+ * before calling your callback.
+ */
+extern DECLSPEC void SDLCALL Mix_ChannelFinished(void (SDLCALL *channel_finished)(int channel));
+
+
+/* Special Effects API by ryan c. gordon. (icculus@icculus.org) */
+
+#define MIX_CHANNEL_POST -2
+
+/* This is the format of a special effect callback:
+ *
+ * myeffect(int chan, void *stream, int len, void *udata);
+ *
+ * (chan) is the channel number that your effect is affecting. (stream) is
+ * the buffer of data to work upon. (len) is the size of (stream), and
+ * (udata) is a user-defined bit of data, which you pass as the last arg of
+ * Mix_RegisterEffect(), and is passed back unmolested to your callback.
+ * Your effect changes the contents of (stream) based on whatever parameters
+ * are significant, or just leaves it be, if you prefer. You can do whatever
+ * you like to the buffer, though, and it will continue in its changed state
+ * down the mixing pipeline, through any other effect functions, then finally
+ * to be mixed with the rest of the channels and music for the final output
+ * stream.
+ *
+ * DO NOT EVER call SDL_LockAudio() from your callback function!
+ */
+typedef void (SDLCALL *Mix_EffectFunc_t)(int chan, void *stream, int len, void *udata);
+
+/*
+ * This is a callback that signifies that a channel has finished all its
+ * loops and has completed playback. This gets called if the buffer
+ * plays out normally, or if you call Mix_HaltChannel(), implicitly stop
+ * a channel via Mix_AllocateChannels(), or unregister a callback while
+ * it's still playing.
+ *
+ * DO NOT EVER call SDL_LockAudio() from your callback function!
+ */
+typedef void (SDLCALL *Mix_EffectDone_t)(int chan, void *udata);
+
+
+/* Register a special effect function. At mixing time, the channel data is
+ * copied into a buffer and passed through each registered effect function.
+ * After it passes through all the functions, it is mixed into the final
+ * output stream. The copy to buffer is performed once, then each effect
+ * function performs on the output of the previous effect. Understand that
+ * this extra copy to a buffer is not performed if there are no effects
+ * registered for a given chunk, which saves CPU cycles, and any given
+ * effect will be extra cycles, too, so it is crucial that your code run
+ * fast. Also note that the data that your function is given is in the
+ * format of the sound device, and not the format you gave to Mix_OpenAudio(),
+ * although they may in reality be the same. This is an unfortunate but
+ * necessary speed concern. Use Mix_QuerySpec() to determine if you can
+ * handle the data before you register your effect, and take appropriate
+ * actions.
+ * You may also specify a callback (Mix_EffectDone_t) that is called when
+ * the channel finishes playing. This gives you a more fine-grained control
+ * than Mix_ChannelFinished(), in case you need to free effect-specific
+ * resources, etc. If you don't need this, you can specify NULL.
+ * You may set the callbacks before or after calling Mix_PlayChannel().
+ * Things like Mix_SetPanning() are just internal special effect functions,
+ * so if you are using that, you've already incurred the overhead of a copy
+ * to a separate buffer, and that these effects will be in the queue with
+ * any functions you've registered. The list of registered effects for a
+ * channel is reset when a chunk finishes playing, so you need to explicitly
+ * set them with each call to Mix_PlayChannel*().
+ * You may also register a special effect function that is to be run after
+ * final mixing occurs. The rules for these callbacks are identical to those
+ * in Mix_RegisterEffect, but they are run after all the channels and the
+ * music have been mixed into a single stream, whereas channel-specific
+ * effects run on a given channel before any other mixing occurs. These
+ * global effect callbacks are call "posteffects". Posteffects only have
+ * their Mix_EffectDone_t function called when they are unregistered (since
+ * the main output stream is never "done" in the same sense as a channel).
+ * You must unregister them manually when you've had enough. Your callback
+ * will be told that the channel being mixed is (MIX_CHANNEL_POST) if the
+ * processing is considered a posteffect.
+ *
+ * After all these effects have finished processing, the callback registered
+ * through Mix_SetPostMix() runs, and then the stream goes to the audio
+ * device.
+ *
+ * DO NOT EVER call SDL_LockAudio() from your callback function!
+ *
+ * returns zero if error (no such channel), nonzero if added.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_RegisterEffect(int chan, Mix_EffectFunc_t f, Mix_EffectDone_t d, void *arg);
+
+
+/* You may not need to call this explicitly, unless you need to stop an
+ * effect from processing in the middle of a chunk's playback.
+ * Posteffects are never implicitly unregistered as they are for channels,
+ * but they may be explicitly unregistered through this function by
+ * specifying MIX_CHANNEL_POST for a channel.
+ * returns zero if error (no such channel or effect), nonzero if removed.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_UnregisterEffect(int channel, Mix_EffectFunc_t f);
+
+
+/* You may not need to call this explicitly, unless you need to stop all
+ * effects from processing in the middle of a chunk's playback. Note that
+ * this will also shut off some internal effect processing, since
+ * Mix_SetPanning() and others may use this API under the hood. This is
+ * called internally when a channel completes playback.
+ * Posteffects are never implicitly unregistered as they are for channels,
+ * but they may be explicitly unregistered through this function by
+ * specifying MIX_CHANNEL_POST for a channel.
+ * returns zero if error (no such channel), nonzero if all effects removed.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_UnregisterAllEffects(int channel);
+
+
+#define MIX_EFFECTSMAXSPEED "MIX_EFFECTSMAXSPEED"
+
+/*
+ * These are the internally-defined mixing effects. They use the same API that
+ * effects defined in the application use, but are provided here as a
+ * convenience. Some effects can reduce their quality or use more memory in
+ * the name of speed; to enable this, make sure the environment variable
+ * MIX_EFFECTSMAXSPEED (see above) is defined before you call
+ * Mix_OpenAudio().
+ */
+
+
+/* Set the panning of a channel. The left and right channels are specified
+ * as integers between 0 and 255, quietest to loudest, respectively.
+ *
+ * Technically, this is just individual volume control for a sample with
+ * two (stereo) channels, so it can be used for more than just panning.
+ * If you want real panning, call it like this:
+ *
+ * Mix_SetPanning(channel, left, 255 - left);
+ *
+ * ...which isn't so hard.
+ *
+ * Setting (channel) to MIX_CHANNEL_POST registers this as a posteffect, and
+ * the panning will be done to the final mixed stream before passing it on
+ * to the audio device.
+ *
+ * This uses the Mix_RegisterEffect() API internally, and returns without
+ * registering the effect function if the audio device is not configured
+ * for stereo output. Setting both (left) and (right) to 255 causes this
+ * effect to be unregistered, since that is the data's normal state.
+ *
+ * returns zero if error (no such channel or Mix_RegisterEffect() fails),
+ * nonzero if panning effect enabled. Note that an audio device in mono
+ * mode is a no-op, but this call will return successful in that case.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_SetPanning(int channel, Uint8 left, Uint8 right);
+
+
+/* Set the position of a channel. (angle) is an integer from 0 to 360, that
+ * specifies the location of the sound in relation to the listener. (angle)
+ * will be reduced as neccesary (540 becomes 180 degrees, -100 becomes 260).
+ * Angle 0 is due north, and rotates clockwise as the value increases.
+ * For efficiency, the precision of this effect may be limited (angles 1
+ * through 7 might all produce the same effect, 8 through 15 are equal, etc).
+ * (distance) is an integer between 0 and 255 that specifies the space
+ * between the sound and the listener. The larger the number, the further
+ * away the sound is. Using 255 does not guarantee that the channel will be
+ * culled from the mixing process or be completely silent. For efficiency,
+ * the precision of this effect may be limited (distance 0 through 5 might
+ * all produce the same effect, 6 through 10 are equal, etc). Setting (angle)
+ * and (distance) to 0 unregisters this effect, since the data would be
+ * unchanged.
+ *
+ * If you need more precise positional audio, consider using OpenAL for
+ * spatialized effects instead of SDL_mixer. This is only meant to be a
+ * basic effect for simple "3D" games.
+ *
+ * If the audio device is configured for mono output, then you won't get
+ * any effectiveness from the angle; however, distance attenuation on the
+ * channel will still occur. While this effect will function with stereo
+ * voices, it makes more sense to use voices with only one channel of sound,
+ * so when they are mixed through this effect, the positioning will sound
+ * correct. You can convert them to mono through SDL before giving them to
+ * the mixer in the first place if you like.
+ *
+ * Setting (channel) to MIX_CHANNEL_POST registers this as a posteffect, and
+ * the positioning will be done to the final mixed stream before passing it
+ * on to the audio device.
+ *
+ * This is a convenience wrapper over Mix_SetDistance() and Mix_SetPanning().
+ *
+ * returns zero if error (no such channel or Mix_RegisterEffect() fails),
+ * nonzero if position effect is enabled.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_SetPosition(int channel, Sint16 angle, Uint8 distance);
+
+
+/* Set the "distance" of a channel. (distance) is an integer from 0 to 255
+ * that specifies the location of the sound in relation to the listener.
+ * Distance 0 is overlapping the listener, and 255 is as far away as possible
+ * A distance of 255 does not guarantee silence; in such a case, you might
+ * want to try changing the chunk's volume, or just cull the sample from the
+ * mixing process with Mix_HaltChannel().
+ * For efficiency, the precision of this effect may be limited (distances 1
+ * through 7 might all produce the same effect, 8 through 15 are equal, etc).
+ * (distance) is an integer between 0 and 255 that specifies the space
+ * between the sound and the listener. The larger the number, the further
+ * away the sound is.
+ * Setting (distance) to 0 unregisters this effect, since the data would be
+ * unchanged.
+ * If you need more precise positional audio, consider using OpenAL for
+ * spatialized effects instead of SDL_mixer. This is only meant to be a
+ * basic effect for simple "3D" games.
+ *
+ * Setting (channel) to MIX_CHANNEL_POST registers this as a posteffect, and
+ * the distance attenuation will be done to the final mixed stream before
+ * passing it on to the audio device.
+ *
+ * This uses the Mix_RegisterEffect() API internally.
+ *
+ * returns zero if error (no such channel or Mix_RegisterEffect() fails),
+ * nonzero if position effect is enabled.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_SetDistance(int channel, Uint8 distance);
+
+
+/*
+ * !!! FIXME : Haven't implemented, since the effect goes past the
+ * end of the sound buffer. Will have to think about this.
+ * --ryan.
+ */
+#if 0
+/* Causes an echo effect to be mixed into a sound. (echo) is the amount
+ * of echo to mix. 0 is no echo, 255 is infinite (and probably not
+ * what you want).
+ *
+ * Setting (channel) to MIX_CHANNEL_POST registers this as a posteffect, and
+ * the reverbing will be done to the final mixed stream before passing it on
+ * to the audio device.
+ *
+ * This uses the Mix_RegisterEffect() API internally. If you specify an echo
+ * of zero, the effect is unregistered, as the data is already in that state.
+ *
+ * returns zero if error (no such channel or Mix_RegisterEffect() fails),
+ * nonzero if reversing effect is enabled.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern no_parse_DECLSPEC int SDLCALL Mix_SetReverb(int channel, Uint8 echo);
+#endif
+
+/* Causes a channel to reverse its stereo. This is handy if the user has his
+ * speakers hooked up backwards, or you would like to have a minor bit of
+ * psychedelia in your sound code. :) Calling this function with (flip)
+ * set to non-zero reverses the chunks's usual channels. If (flip) is zero,
+ * the effect is unregistered.
+ *
+ * This uses the Mix_RegisterEffect() API internally, and thus is probably
+ * more CPU intensive than having the user just plug in his speakers
+ * correctly. Mix_SetReverseStereo() returns without registering the effect
+ * function if the audio device is not configured for stereo output.
+ *
+ * If you specify MIX_CHANNEL_POST for (channel), then this the effect is used
+ * on the final mixed stream before sending it on to the audio device (a
+ * posteffect).
+ *
+ * returns zero if error (no such channel or Mix_RegisterEffect() fails),
+ * nonzero if reversing effect is enabled. Note that an audio device in mono
+ * mode is a no-op, but this call will return successful in that case.
+ * Error messages can be retrieved from Mix_GetError().
+ */
+extern DECLSPEC int SDLCALL Mix_SetReverseStereo(int channel, int flip);
+
+/* end of effects API. --ryan. */
+
+
+/* Reserve the first channels (0 -> n-1) for the application, i.e. don't allocate
+ them dynamically to the next sample if requested with a -1 value below.
+ Returns the number of reserved channels.
+ */
+extern DECLSPEC int SDLCALL Mix_ReserveChannels(int num);
+
+/* Channel grouping functions */
+
+/* Attach a tag to a channel. A tag can be assigned to several mixer
+ channels, to form groups of channels.
+ If 'tag' is -1, the tag is removed (actually -1 is the tag used to
+ represent the group of all the channels).
+ Returns true if everything was OK.
+ */
+extern DECLSPEC int SDLCALL Mix_GroupChannel(int which, int tag);
+/* Assign several consecutive channels to a group */
+extern DECLSPEC int SDLCALL Mix_GroupChannels(int from, int to, int tag);
+/* Finds the first available channel in a group of channels,
+ returning -1 if none are available.
+ */
+extern DECLSPEC int SDLCALL Mix_GroupAvailable(int tag);
+/* Returns the number of channels in a group. This is also a subtle
+ way to get the total number of channels when 'tag' is -1
+ */
+extern DECLSPEC int SDLCALL Mix_GroupCount(int tag);
+/* Finds the "oldest" sample playing in a group of channels */
+extern DECLSPEC int SDLCALL Mix_GroupOldest(int tag);
+/* Finds the "most recent" (i.e. last) sample playing in a group of channels */
+extern DECLSPEC int SDLCALL Mix_GroupNewer(int tag);
+
+/* Play an audio chunk on a specific channel.
+ If the specified channel is -1, play on the first free channel.
+ If 'loops' is greater than zero, loop the sound that many times.
+ If 'loops' is -1, loop inifinitely (~65000 times).
+ Returns which channel was used to play the sound.
+*/
+#define Mix_PlayChannel(channel,chunk,loops) Mix_PlayChannelTimed(channel,chunk,loops,-1)
+/* The same as above, but the sound is played at most 'ticks' milliseconds */
+extern DECLSPEC int SDLCALL Mix_PlayChannelTimed(int channel, Mix_Chunk *chunk, int loops, int ticks);
+extern DECLSPEC int SDLCALL Mix_PlayMusic(Mix_Music *music, int loops);
+
+/* Fade in music or a channel over "ms" milliseconds, same semantics as the "Play" functions */
+extern DECLSPEC int SDLCALL Mix_FadeInMusic(Mix_Music *music, int loops, int ms);
+extern DECLSPEC int SDLCALL Mix_FadeInMusicPos(Mix_Music *music, int loops, int ms, double position);
+#define Mix_FadeInChannel(channel,chunk,loops,ms) Mix_FadeInChannelTimed(channel,chunk,loops,ms,-1)
+extern DECLSPEC int SDLCALL Mix_FadeInChannelTimed(int channel, Mix_Chunk *chunk, int loops, int ms, int ticks);
+
+/* Set the volume in the range of 0-128 of a specific channel or chunk.
+ If the specified channel is -1, set volume for all channels.
+ Returns the original volume.
+ If the specified volume is -1, just return the current volume.
+*/
+extern DECLSPEC int SDLCALL Mix_Volume(int channel, int volume);
+extern DECLSPEC int SDLCALL Mix_VolumeChunk(Mix_Chunk *chunk, int volume);
+extern DECLSPEC int SDLCALL Mix_VolumeMusic(int volume);
+
+/* Halt playing of a particular channel */
+extern DECLSPEC int SDLCALL Mix_HaltChannel(int channel);
+extern DECLSPEC int SDLCALL Mix_HaltGroup(int tag);
+extern DECLSPEC int SDLCALL Mix_HaltMusic(void);
+
+/* Change the expiration delay for a particular channel.
+ The sample will stop playing after the 'ticks' milliseconds have elapsed,
+ or remove the expiration if 'ticks' is -1
+*/
+extern DECLSPEC int SDLCALL Mix_ExpireChannel(int channel, int ticks);
+
+/* Halt a channel, fading it out progressively till it's silent
+ The ms parameter indicates the number of milliseconds the fading
+ will take.
+ */
+extern DECLSPEC int SDLCALL Mix_FadeOutChannel(int which, int ms);
+extern DECLSPEC int SDLCALL Mix_FadeOutGroup(int tag, int ms);
+extern DECLSPEC int SDLCALL Mix_FadeOutMusic(int ms);
+
+/* Query the fading status of a channel */
+extern DECLSPEC Mix_Fading SDLCALL Mix_FadingMusic(void);
+extern DECLSPEC Mix_Fading SDLCALL Mix_FadingChannel(int which);
+
+/* Pause/Resume a particular channel */
+extern DECLSPEC void SDLCALL Mix_Pause(int channel);
+extern DECLSPEC void SDLCALL Mix_Resume(int channel);
+extern DECLSPEC int SDLCALL Mix_Paused(int channel);
+
+/* Pause/Resume the music stream */
+extern DECLSPEC void SDLCALL Mix_PauseMusic(void);
+extern DECLSPEC void SDLCALL Mix_ResumeMusic(void);
+extern DECLSPEC void SDLCALL Mix_RewindMusic(void);
+extern DECLSPEC int SDLCALL Mix_PausedMusic(void);
+
+/* Set the current position in the music stream.
+ This returns 0 if successful, or -1 if it failed or isn't implemented.
+ This function is only implemented for MOD music formats (set pattern
+ order number) and for OGG, FLAC, MP3_MAD, MP3_MPG and MODPLUG music
+ (set position in seconds), at the moment.
+*/
+extern DECLSPEC int SDLCALL Mix_SetMusicPosition(double position);
+
+/* Check the status of a specific channel.
+ If the specified channel is -1, check all channels.
+*/
+extern DECLSPEC int SDLCALL Mix_Playing(int channel);
+extern DECLSPEC int SDLCALL Mix_PlayingMusic(void);
+
+/* Stop music and set external music playback command */
+extern DECLSPEC int SDLCALL Mix_SetMusicCMD(const char *command);
+
+/* Synchro value is set by MikMod from modules while playing */
+extern DECLSPEC int SDLCALL Mix_SetSynchroValue(int value);
+extern DECLSPEC int SDLCALL Mix_GetSynchroValue(void);
+
+/* Set/Get/Iterate SoundFonts paths to use by supported MIDI backends */
+extern DECLSPEC int SDLCALL Mix_SetSoundFonts(const char *paths);
+extern DECLSPEC const char* SDLCALL Mix_GetSoundFonts(void);
+extern DECLSPEC int SDLCALL Mix_EachSoundFont(int (SDLCALL *function)(const char*, void*), void *data);
+
+/* Get the Mix_Chunk currently associated with a mixer channel
+ Returns NULL if it's an invalid channel, or there's no chunk associated.
+*/
+extern DECLSPEC Mix_Chunk * SDLCALL Mix_GetChunk(int channel);
+
+/* Close the mixer, halting all playing audio */
+extern DECLSPEC void SDLCALL Mix_CloseAudio(void);
+
+/* We'll use SDL for reporting errors */
+#define Mix_SetError SDL_SetError
+#define Mix_GetError SDL_GetError
+#define Mix_ClearError SDL_ClearError
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif /* SDL_MIXER_H_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt b/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2e67b77cbb6ed89bd8c78b5d6a7f8e43974bf6f2
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.FLAC.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt b/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a89532db83cd3b7fa8575b38ce08065e92132856
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.modplug.txt
@@ -0,0 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt b/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2111cd79fafac286df4728c833cc0268c960e328
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.mpg123.txt
@@ -0,0 +1,776 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
+
+Main message, to include in "About ..." boxes, etc:
+
+ Copyright (c) 1995-2013 by Michael Hipp and others,
+ free software under the terms of the LGPL v2.1
+
+There is an attempt to cover the actual list of authors in the AUTHORS file.
+Project maintainer since 2006 is Thomas Orgis and many people have contributed
+since the Michael Hipp era, but he stays the initial source and it would
+be impractical to count them all individually, so it's "and others".
+Source files contain the phrase "the mpg123 project" to the same effect
+in their license boilerplate; especially those that were added after
+maintainership changed. The person mainly responsible for the first version
+is usually named in the phrase "initially written by ...".
+
+All files in the distribution that don't carry a license note on their own are
+licensed under the terms of the LGPL 2.1; exceptions may apply, especially to
+files not in the official distribution but in the revision control repository.
+
+The formal license text follows.
+
+=======================
+1. The LGPL version 2.1
+=======================
+
+
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
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+the Free Software Foundation. If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+ 14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission. For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this. Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+ NO WARRANTY
+
+ 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+
+====================
+2. The GPL version 2
+====================
+
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
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+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
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+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
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+
+ 1. You may copy and distribute verbatim copies of the Program's
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+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
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+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
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+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
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+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
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+Thus, it is not the intent of this section to claim rights or contest
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+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
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+under Section 2) in object code or executable form under the terms of
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+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
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+ 5. You are not required to accept this License, since you have not
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+ 6. Each time you redistribute the Program (or any work based on the
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+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
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+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
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+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
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+It is not the purpose of this section to induce you to infringe any
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+
+This section is intended to make thoroughly clear what is believed to
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+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
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+countries not thus excluded. In such case, this License incorporates
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+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
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+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6456dc4ed17fb4de76e4f19318de3c0021b63684
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.ogg-vorbis.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_image/file/default/external
+---
+
+Copyright (c) 2002-2008 Xiph.org Foundation
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt b/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt
new file mode 100644
index 0000000000000000000000000000000000000000..adb56a854b6eff6d2afa846d13d38128e62c40c6
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+ Jean-Marc Valin, Timothy B. Terriberry,
+ CSIRO, Gregory Maxwell, Mark Borgerding,
+ Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt b/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt
new file mode 100644
index 0000000000000000000000000000000000000000..dfc9681fcf54ba50bc0ee265bdc1ed9386840846
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x64/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt b/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2e67b77cbb6ed89bd8c78b5d6a7f8e43974bf6f2
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.FLAC.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt b/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a89532db83cd3b7fa8575b38ce08065e92132856
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.modplug.txt
@@ -0,0 +1,5 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+ModPlug-XMMS and libmodplug are now in the public domain.
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt b/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2111cd79fafac286df4728c833cc0268c960e328
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.mpg123.txt
@@ -0,0 +1,776 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+This is the file that contains the terms of use, copying, etc. for the mpg123 distribution package.
+
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+
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+
+These requirements apply to the modified work as a whole. If
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+ 5. You are not required to accept this License, since you have not
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+infringement or for any other reason (not limited to patent issues),
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+
+This section is intended to make thoroughly clear what is believed to
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+
+ 8. If the distribution and/or use of the Program is restricted in
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+original copyright holder who places the Program under this License
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+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
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+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
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+Software Foundation. If the Program does not specify a version number of
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+
+ 10. If you wish to incorporate parts of the Program into other free
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+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt b/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6456dc4ed17fb4de76e4f19318de3c0021b63684
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.ogg-vorbis.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_image/file/default/external
+---
+
+Copyright (c) 2002-2008 Xiph.org Foundation
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt b/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt
new file mode 100644
index 0000000000000000000000000000000000000000..adb56a854b6eff6d2afa846d13d38128e62c40c6
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.opus.txt
@@ -0,0 +1,48 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
+ Jean-Marc Valin, Timothy B. Terriberry,
+ CSIRO, Gregory Maxwell, Mark Borgerding,
+ Erik de Castro Lopo
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
diff --git a/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt b/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt
new file mode 100644
index 0000000000000000000000000000000000000000..dfc9681fcf54ba50bc0ee265bdc1ed9386840846
--- /dev/null
+++ b/libs/SDL2_mixer/lib/x86/LICENSE.opusfile.txt
@@ -0,0 +1,32 @@
+The source code to this library used with SDL_mixer can be found here:
+https://hg.libsdl.org/SDL_mixer/file/default/external
+---
+
+Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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