So I'm reinstalling my OS for a fresh start to the school year, just to sort of flush out all the useless programs and useless files that I have (I'm sooo used to windows, so it's a healthy habit). Now my thing is about my itunes library. Do I just copy the itunes main files (Itunes Library itl, Temp File, Itunes Music Library XML) or would I want to transfer the entire itunes library? (Would it keep my ratings, date added, purchased info, ablum art and stuff like that when I do it this way) I have it set so itunes automatically copies the files I import, so the whole library is in one folder rather than being all over my computer (So if I delete a file out of itunes, it asks me if I want to keep the file in the library or move it to trash). I plan on putting the whole library on my external hard drive. So would that mean in the future of an OS reinstall, or a backup, all I have to do is just put my new library in with that and it will add the newer folders and update the older files? Now is there anyway that I can set itunes to just use the one off the external so I don't have to keep copying the huge folder (as it gets bigger and bigger over time) over to my external? Wut I am saying is, can I set itunes to use the external folder as its "home folder" rather than doing so on the mac?