So recently I decided I wanted to play COD4 again, so I downloaded and installed from Steam. The single player runs fine, but the multiplayer errors out everytime: "iw3mp.exe has stopped working".
I've seen a few fixes for Vista around the net. Please do not respond with the "Stereo Mixer" fix, because there is no such thing in Windows 7.
What do I need to do to fix this error so I can play COD4 multiplayer again?