MP3 Player plays only 25 songs, cap...

Seems like a big problems you got there...

I reccomened re-formatting your drive to fat32 (for windows users) and giving it a second try.

I had the saem trouble a while back with my iPod Video 60gb and noticed that it was storing huge amounts of data that wasnt meant to be there. After the reformat it all worked again.

You also sure its not a full drive? because my Q-Be used to say "file error" on a full drive (vista bug)

---Give reformatting a go though.