Click here to browse the sound effects.
Sounds are categorized by length... (long... medium... short).
XMPlay and Winamp can play IT, MOD, OGG, WMA, XM.
See tunes.htm for info on converting between filetypes. I had a lot of problems converting short WAVs to WMA and back to WAV. Some of them didn't want to play right after going WAV - WMA - WAV.