You can download Tom Swift and the Visitor From Planet X for free Here
http://www.archive.org/details/tomswift_planetx_mn_librivox. They have many free audible books. Free Christmas gifts if you want to burn them on Cd's. Other wise something fun to listen to in the car! They also have Emma, by Jane Austen, A Tale of Two Cities, by Charles Dickens, and Adventures of Huckleberry Finn, by Mark Twain and the Adventures of Sherlock Holmes amoung the 1000's of other books!