I'm having difficulty moving audiobooks from my Windows Vista PC to my iPad. I downloaded some free audiobooks from librivox.org They're in MP3 format. I can't seem to find a way to transfer them to my iPad and have them appear in the Audiobooks section. I can click and drag them into the Music section and they play. I try to click and drag them into the Books section but nothing happens. I can click and drag EPUB format books from my PC to the iPad successfully. I converted a couple of the audiobook files to M4A format but that didn't make any difference. I've also tried "Add File to Library" while in the Books section of the iPad but that doesn't do the job. I've read through the user's guide but it seems to assume that your only source for audiobooks is the iTunes store. At least they work in the Music section but I would really prefer to be able to have them appear properly in the Audiobooks section. Do I need a different format rather than MP3 or M4A? Am I missing something really obvious? Thanks!