I honestly don't know how I could homeschool without audio books, and with Librivox just about any great classic is free. The tricky thing with Librivox is that since all of the readers are volunteers, the quality is not consistent. In preparation for an 8,000 mile road trip, I spent hours and hours browsing the catalog and listening to different readers and have found many very well done books and a few absolute gems! Now I'm sharing that list with you. By the way, listening to books in the car is a fantastic strategy. Not only do you all get to experience the book together, but it can really make for peaceful drives, with everyone intently listening. We drove over 8,000 miles a few years ago, and audio books were a big part of that trip, we never even used the built in DVD player in our car (even though we brought a few DVDs along