I've got a minidisc I've used for over a year to record short musical compositions to, on a Sony MZ-R900. I've recorded appx 2 hours of material to appx 45 tracks. Today, after ensuring the Rec-Posi mode was set to record from the end of the disc, I began recording another composition. I quickly noticed that the display read that it was recording to track 001, rather than to track 046 or so (!!!!) I panicked and pressed stop. I have two MZ-R900s and BOTH now indicate this disc only has 1 track of audio on it -- the few seconds I just recorded today!! If anyone has experience with this type of situation, and can guide me towards possible data recovery, I'd be extremely grateful. Thanks