I recently got into digging through the files of an old, but gold Xbox Arcade Game: Hexic HD. After exporting the files, I wanted to look through the audio, as it was really the main event for me. To my surprise, I didn't get .wav or .xma files at least, but .flv files that I can't open with any audio player for the life of me.
I uploaded all 29 sounds files here.
Here is a picture of the header, I don't know what else to do, Wavepad, VLC, EkszBox-ABX, towav.exe, none of them will open them or convert them.