Yes, they are mostly audible files. At least for the last four years or so. Before that I was ripping CDs and now if it's a book I can't get at Audible. In any event. I am very pleased not to have that long wait. Terry Pogue My Foodie Photos http://www.flickr.com/photos/terrypogue/collections/ On Sep 9, 2010, at 12:13 PM, Kirk McElhearn wrote: > As I said earlier, it's not so much the amount as the fact that the files are very big. Music files are a few MB; audiobooks ofter 100 MB (assuming you're using Audible files). So reading them takes much longer per file. > > In any case, there's little reason to keep a lot of books in your library if you're not planning to listen to them again soon. > > > Kirk