I took a class at the library, some time ago, and at that time they said that some players are not WMA compatible, and the library has different ways to download (mp3/pc/wma) I have found that many of the books that I wanted were on WMA format. so I bought a player that would accept WMA . Also if you get Audio books from the library they are checked out just like paper books you are allowed a certain amount of time to use. If you transfer immediately to your player they will stay BUT it you leave on your computer to transfer later they will be removed after 3 weeks(or what ever time you library has set up. Best to go to the library and have a chat to get started. Have fun