I need to know if this type of command even exists. I hate the sound a MC makes when it's built. It's this bass type warbling sound i cant stand in my headphone. I want to know if there is a command that lists the sound files that are being played. I cant figure out what sound file is being used so i can modify it. If anyone knows the sound file a movement chamber uses please let me know. Thanks.

I don't know of a command like that, but check in the modification forums, there's probably a listing of what files are what sprites/sounds somewhere there.

ns/sounds/misc/alien_chamber_deploy.wav
I think.