Although I haven't quite figured out how or why, the Aesop's Fables book is still on sale as part of an Amazon promotion. I don't know how long it will last, but it is 40% off at the moment, listed for just $20: Aesop's Fables in Latin - Amazon Promotion.
To learn about the contents of the book, sample pages, supplementary materials (including audio), you can find lots of material at the Aesopus Ning.