I listen to a lot of audio books from my Sony Walkman (NWZ-E436F). I have an RF modulator so I can play them through the audio system in the truck. The only problem is the thing slides around and gets lost on the floor.
This is really the perfect kind of problem for a makerbot to solve. The pieces are simple and tolerances are forgiving. I could improve the design of the stem but recessing the bolt that holds the two parts of the stem together.