I have an 80gb ipod classic, formatted with windows. I have around 55 gb of music and movies on it, and after connecting it to a friends mac book (to play the music on my ipod through his itunes) it's now showing that there is no music or videos. My library was available when connected to the mac book, but after I ejected it (properly) it shows no music or videos. When I connect it to my PC now, it still shows that the 55GB are still on there, but it lists the data as "Other" rather than "Music" or "Video". I have yet to restore the ipod due to irrecoverable music I would lose. Anyone have an idea other than restoring it?