Is there a trick to buying audio books?? I bought a cd with a collection of Roald Dahl book for my low readers..I wanted them to listen and follow along with the book. Well, one my students tried it out yesterday and the cd does not follow the book. I'm sooo bummed. It never occurred to me that it would be different. If I buy more audio books, is there a way to tell if it will follow the book exactly before purchasing it? I did find three of the Harry potter books on cassette at the Goodwill for $3 each, which I was excited about and the books seem to follow the tape exactly.