What's wrong with Time Machine?
Just check out a few of the discussions here. Nothing is "wrong" with TimeMachine as a concept. But if you go to the Apple discussion forums you will come across a whole lot of reports from early on where folks had lost data from relying on it. There has also been problems with Disk Utility formating FAT32 drives at that time. Again, Mac has come up with an update since then, so it may all be sorted out at this point. If TimeMachine is working, that's fine. I don't know if it can be set to back up an external (non-boot) drive with your music files on it. Certainly if you've put them on your boot drive it will back them up, but I don't do that. As I understand it, it backs up your boot (startup) drive that has Leopard on it. I've been using it successfully thus far on my g5 tower, but I've yet to have to rely upon the backup. My suggestion was to give it time to prove itself out. It's a great feature, don't get me wrong.