Hello anyone listen to any audio books from itunes? They are significantly more expensive than the music there. I was thinking about buying a few books, yes before you ask I'm down for Harry Potter too. I'm gonna try listen to a book on my new Nano as I work out on my exercise bike. Figured this would be something different to try instead of having the Rocky theme tune on loop (don't laff that stuff works). What is the music format for the audio books? How much can I cram on the 4 gig Nano? Any recommendations too???