Found a site, LibriVox, that offers free audio-books for works that are in the public-domain. How is this possible, you ask? Because the books are read by random collections of average Joes, not professionals. Still, it might be worth something if you're looking to listen to a classic book on your iPod or other mobile audio device. I haven't heard any of them yet, but I'm downloading Psmith in the City even as I type.