OK, so I copied my itunes library to an external (firewire) drive. Then I changed the location in the iTunes preferences to the new drive. After a few minutes of reorganizing, iTunes can't find any of the files. They're all listed in iTunes with the little exclamation point in front of them, and it is basically asking me to point it to each song. I'd do that, but we're talking well over 10,000 songs. Where did I screw this up? (I did it (successfully) once before, but that was like five or six years ago). Can I go back and fix my mistakes? Thanks!