Does steam not want us to install custom sounds or can someone explain to me how to customize the tank and witch songs.I remember customizing them once, but I can't seem to find any of the songs I put in.
It's incredibly easy to do. You just locate the tank and witch songs in the Left 4 Dead Audio folders and replace them with the appropriate file with the same file format, name and audio frequency (44100 Hz, 48000 Hz, etc.)
I replaced my Tank music with Down with the Sickness, and my Dark Carnival concert music with some club music.