When I got my MBP, it came with a single disc, the Upgrade DVD. Some time after installing Leopard, I realized that GarageBand had no loops. When I clicked on the empty space, GarageBand prompted me to either install them from the web, which didn't work, or to insert the Mac OS X Install Disc 2. Now, since I don't have any such CD and the one for Tiger didn't work, does anyone here know how I can get the Apple loops?