So there's this PC game, Startopia. Its music files are in TFA and TFB format, which I suspect is a format Mucky Foot made up. The game manages to read them as WAVs (I think; there are txts that refer to the files as WAVs) but when I change the files to WAVs myself they end up corrupted.

If I get some help I'll upload the soundtrack. It's good stuff.