[Feature] Allow objects to play multiple sounds at once

[lafoxxx92]

Basically like "fix silent bfg", but should also fix the following issue:
Pickup sound breaks weapon firing sound
Firing a chaingun in damaging sector results in player pain sound not played at all

Sounds which can be played simultaneously:
All player sounds of different kind (pickup, weapon firing, pain/use/death)
All weapon sounds (beside chainsaw)
All monster sounds of different kind (walk, fire, pain/death); sounds of different walk states should not break each other
All level sounds
All menu sounds
etc.

EXCEPTIONS:
Pain/death sounds should play as they do now (one sound at once, newer pain state sound breaks current one, death sound breaks pain state sound)
DSPSTOP should break DSPSTART (elevators) and DSSTNMOV (floor raise/lower and stop)
otherwise it will sound like PSXDOOM (in a bad way)

[fabiangreffrath]

Please try if switching "Retain quirks in Doom's sound code" on the third page of the Compatibility menu works better for you.

[lafoxxx92]

Please try if switching "Retain quirks in Doom's sound code" on the third page of the Compatibility menu works better for you.

Thanks, but this doesn't seem to affect the observed sound behaviour in the reported situations:
Pickup sound breaks weapon firing sound
Firing a chaingun in damaging sector results in player pain sound not played at all