The biggest single reason I wanted to fix my old iMac was to put a honkin’ big HD in it, and the reason for that was so I could have an iTunes library on the main hard drive instead of an external (USB 2.0) drive. My iTunes Media folder looks like this:
740 Home Videos
6886 Mobile Applications
10791 TV Shows
Why iTunes doesn’t let us manage our storage intelligently is a mystery (especially given the ridiculously small storage options that Apple provides its Macs, and all their other devices for that matter). But now I’ve got plenty of room to store 250 GB of media in the iTunes folder as well as the different places I keep it for real. So there.
The only problem was getting it into the iTunes folder, in a way that iTunes understands. But this is a known problem, and Apple has a documented procedure.
Then I had to Authorize my computer (the “new” iMac) and Deauthorize the old one (the Mac Mini). I don’t know how Apple keeps track of what computers have been authorized, but they decided this one was already Authorized, from back when it was our main computer. I don’t know if I forgot to Deauthorize it or what, but now I’ve only got 2 of 5 Authorized computers.