This site is pretty cool. There are tons and tons of books, that people have recorded and you can listen to for free. Just click on the “catalog” to search. http://librivox.org/
http://search.overdrive.com/ This is a source of thousands of audio books through public libraries across the world. This link will allow you to check and see if your local library participates in the program. I have downloaded a book by the Yarn Harlot, Christopher Hitchens, and Al Franken so far. Some books allow you to make 1 cd copy for personal use, others expire after 2 weeks and can be renewed multiple times.