Trying to setup an ipad2 for my mother and load some of her audio books on it. The audio books are mostly in mp3 format with some being in m4a. Books are marked as audio book format. Problem is that when placed on the ipad and accessed by going through music -> more -> audio books, the books appear, selecting one shows all files/parts of the book, but when playing, it does not advance to next file. Particular problem in which some books are split into 3 minute chunks per file. Taking the same files and placing them on my ipod 5.5, they play fine and auto-advance fine. Any ideas?