The shuffle is a nice little toy though it has a couple of quirks. The most annoying one is how it deals with audio books. The location of where it put bookmarks after you sync strikes me as slightly non-deterministic. Sometimes it remembers where I’m and other times it puts me in odd locations.
I found an apple knowledge base article describing how to play audio books but the behavior of the shuffle doesn’t match what I read.
The back button on the shuffle is irritating especially if you have audio books. The back button is overloaded. 1 click = go to beginning of track. 2 clicks = go to start of the previous song. Don’t double click in time = back to the beginning of the audio book for you.