istage mp3 player was working, but now after filling w/music "disk empty"?

1 Gig istage MP3 player, worked while half full of music, then I added more so there was only 40 Mb left of free space- I turned it on and it said "disk empty"...no more list of songs when plugged into computer, but still shows that the memory is almost full. How do I repair it? If I reformat, will it lose the programs that make it into a music player and FM radio? It is a "flash drive" type with a small window to read on top, model IS-2002?
murphy, March 2008


done
omg thanks a lot my friend had this problem with his istage and thought its unsolvable and but thanks to your "format" advice its working fine! thx a lot for sharing

Arshads Friend, May 2008
Ok, I fixed it (orig. poster). I right clicked on Flash Drive, and then clicked on "format"...I lost all the songs and had to re-enter them, but I did not lose the MP3 player, recorder, FM radio- which I think is all in the "firmware"...

Murphy, March 2008