I listen to audio books on an older Sandisk clip sport and that of course won't work for you.
But I suggest you look at an Amazon fire 7 for $60. 8 GB and at least 8 hrs battery. For $80 you can get 16 GB. You can put at least 4 audio books on it if not more. Bookmarks, notes, whatever you need. Switch from one book to another and back. It is bigger than a sandisk play but it has many more features. I don't know how you use your Sandisk, but I use mine clipped to my shirt when walking and onto the car radio when driving. The Fire would work just fine for those things. Also I am sure you could attach it to a belt fairly easy.
