The easiest way to delete an entire audiobook is hooking it up to the computer & deleting the book by folder from the player. Otherwise, it’s one file at a time through the player’s menu. I usually leave old books on the player until I’m ready to put new books on - delete the old ones, add the new ones all in one session.
I’ve never used AA-format audiobooks. I listen to MP3 and WMA format books. What problem are you having?
