Change default sound volume

Because honestly, the default is way too loud.

These numbers are better than full blast. But do I find myself with just a bit of ear pain while listening to the music, so 13 works better for me. Sound is fine though.

added 30 commits

• 2139d477...03e2a2b4 - 29 commits from branch STJr:master
• 44144e37 - Merge remote-tracking branch 'upstream/master' into defaultsoundvol

Compare with previous version

merged

mentioned in commit dcf843e4