Actually I don't read much. It's not my kind of thing. I haven't had any audio books either, because when I do read I read by myself. But I found this application quite convenient though. Right now I'm in the middle of "The Hobbit", and then I also have bought the Lord of the rings trilogy as audio books. The Sleep timer is great for bed time stories. On my wish list though is a "Resume timer"; When starting to play after a pause, it automatically rewinds a number of minutes or chapters of your choice to help giving you an idea of what happened in the story the previous time.