Quote from MasterLagger on September 6, 2011, 10:57 am

chickenmobile wrote:

I found that in coop (I'm guessing you are working on your coop playground map), sounds act differently than what it does with single player. Some sounds (especially music) cannot be stopped and a volume at 0 will not make it inaudible if the play everywhere flag is ticked.
The best way to get around this would be to use a custom env_soundscape (which spongy suggested) and make the soundscape triggerable rather than 'distance-triggerable' or 'overriding the current soundscape when it is view' like default.

Remember that env_soundscapes are a script file and go inside the scripts folder. The soundscape should be named 'soundscapes_mapnamehere'.

Response:

Edit: It might be possible to work with soundscapes already available.