I'm writing this to get comments and suggetions on backing up an 80g iPod. I have put so much effort into building up my iPod library and I would hate to loose all of that music. It's been a while but I think I downloaded TinkerTools Software and used it to transfer my entire music library from my iPod to my wife's iMac. If I remember correctly, I could not figure out a way to download all the files from my iPod to the iMac. Previously, I was using my iPod with a PC (not my wife's computer). Or, it may have been that my wife wanted to back up all the songs on her iPod on a certain computer because I was going to be goofing around with her iPod settings and she did not want to risk loosing all her songs. I just remember learning that Apple makes it difficult to transfer music files from the iPod to any given computer. That is where TinkerTools comes into the picture (I think). I think this software allows you to transfer the content of the iPod to a computer. However, if I remember correctly, it does this by making invisable files, visable. Then you get these pesky invisable files on your computer that you can't get rid of. But the upside is that you successfully back up your iPod.