I've enjoyed two books from Overdrive- our library system just joined as part of a huge grant from the government- there are 5,000 or so audiobooks. One problem, some are WMA audiobooks and thus not mac compatible. I am looking into a WMA to MP3 converter but I need to access high speed before I can do anything. btw the books don't disappear off your itunes when the loan period ends- you need to delete them manually.