Sound effects have been bugged for years now. One sound effect can be stuck in an infinite loop, which can be broken only with resetting the client. It’s not always the same sound effect that’s bugged, but they change over time.
Since it’s pretty obvious that the sound system is complex and won’t be fully debugged any time soon, how about at least a temporary solution until everything is fixed:
A button to reset the audio engine and break the infinite loop without resetting the client.
Implement this button, and you can take your time resolving the sound issues. It may have use in resolving other issues in the future as well.