the wav.converter crapped on my zip disc!!!!!!

Hello everyone, So I've been using the wav converter w/ no problems until I popped in one of the discs that I was editing (w/ the converter) into one of my 808ex's. "disc not sp808 format- format now?" message came up. I tried in another sp808ex.....same thing. Although, the internal zip drive on the computer still recognizes the samples. So i'm guessing that I'm going to lose all song info because there is no access to songs in the wav.converter program. Anyone know what the problem may be?? Any help would be much appreciated!!!! -aarOn