I am new to iPad, and am looking for the best, least expensive way to manage my iTunes library from my Mac, but still be able to copy PDFs from my work PC to the iPad. Unfortunately, in their infinite wisdom, Apple doesn't allow you to sync Music from one iTunes PC and Books from another iTunes PC. It's all-or-nothing with one PC/Mac (even though, oddly, apps can be synced from more than one PC/Mac). I prefer not to e-mail large PDFs. Is FileApp useful for this purpose?