Background

Version of Chocolate Doom: 3.1.0

Operating System and version: Windows 10

Game: Doom, Heretic, Hexen, Strife

Any loaded WADs and mods (please include full command line): -

### Bug description:

1. Select GUS Emulator in Audio Setup (without a path set)
2. Reduce / Turn off Music Volume in-game, keep SFX Volume to full
3. Select e. g. OPL or Native MIDI in Audio Setup
4. Start the game and switch both SFX and Music to full

Observed behavior:

Both SFX and Music Audio remain either off / or are reduced by the amount in step 2) when GUS Emulator was active.

Expected behavior:

SFX and Music Settings should work normally when switching from GUS to something else, no hidden offset or disabling.