Music files named inconsistently in music.dta

Several music files in music.dta are named inconsistently. For example, Haunted Heights' file is O_HAUNTD, but the other challenge stages, Aerial Garden and Azure Temple, are named O_AGZ and O_ATZ respectively. There's no other O_HHZ file, so Haunted Heights should have that name. The multiplayer tracks also have this issue. Despite never being used in a multiplayer map, all of the Mystic Realm tracks not used in singleplayer (except Tempest Valley), as well as Mine Maze are labeled under O_MP_X, MP referring to multiplayer, even though they aren't in multiplayer. Now these ones are subjective; The Pipe Towers music files are named O_MARIO1 and O_MARIO2, respectively. I think they shuold be called O_PTZX, or O_MGRND and O_MUGRND, or something of the like.

In v2.2.5, Marathon Run was added, and it's menu uses O_SPEC8. Since that track isn't being used in Black Hole, I think it should be renamed. Black Hole should therefore become either O_SPEC8 or O_PAZ.