[crunch]

Actually, it can be done. You are right about it not being heard clientside, bluebrooks. But any map can have normal ambient music added by modifiying the script to include "exec global/ambient.scr", and creating a .mus file for that map.
Of course, I would suggest asking author permissions.
The problem would be if different music was wanted for different areas of the map. Since the aux music channels are trigger driven, triggers would need to be spawned into the map. But the addition of normal ambient music is definately possible.

Kill Ya Later.