At some point in the last year—after Apple upped the iTunes Store’s default video resolution to 640x480—my iTunes library no longer fit comfortably on my laptop’s hard drive. By “comfortably,” I mean that I could continue to store the library there, but my computer would become useless for anything but playing back music and movies. So I made a tough call: my library was going to move to a second hard drive, a G-Tech…
