- Isolated all the bits from the old sound system that are obsolete, and compile them out with USE_FMOD directive
- Moved FMOD_System_Update call to S_Update function in new snd_fmod.c where it belongs
- Mute FMOD when application is not in focus
- Added stubs with research on what needs to happen for relevant sound API functions
- Consolidate FMOD closing code into a single method
- Added some experimental (commented-out) code to test running multiple instances of Quake
- Extra validation checks in FMOD music code
- Removed QuakeSpasm "feature" that skipped the demo reel at startup