I am going to clean up my music library, get rid of the stuff I don't listen to, try and get it down so it will fit on one of those spiffy new 8gb nanos (yes, they are surprisingly nice), so I can get rid of my 20gb U2. Right now I have about 10gb, including podcasts. When I go to the music portion of the library, I can see some purchased music I recognise, but most I don't. I want to keep all my purchased, and just get rid of the extra stuff. Is there any way to go about and hide it, or at least back it up to an archive? I poked around my music folder, it just organizes them by artist, which is no help. There is no purchased folder, that I could simply zip up and stick out of the way.