A lot of iTunes albums come with a PDF file containing the liner notes, which download into the iTunes player along with the songs when an album is purchased. I recently copied my whole library to a new hard drive and for some reason, none of the PDF files are showing up in the iTunes player anymore. They are still on the hard drive and I can access them if I navigate to the right folder, but I can't get them into the iTunes player anymore. I've tried using the "Add A File to Library" and "Add a Folder To Library" functions and I've also tried dragging the icon into iTunes, none of which worked. I put the question out on an Apple support forum but no one has answered. Just wondering if anyone here had any ideas on how to fix this.