I bought this book in paperback first and was very impressed with the content. There are several KEY thought-changing perspectives that can help you unlock your mind and figure out how you want to structure your work-life. Great information.
I could never find the time to finish reading it so I bought the audio version. I was able to find the time to listen to it on my commute to work so that part of the audio was good. However, there are two things that made listening to the book difficult for me. One was that Tim provides a LOT of web links and references that people can use as life-tools which the narrator read VERBATIM. That made those sections of the book incredible monotonous. The other small irritation that got worse as the book went along was that the narrator sounded somewhat sarcastic. That's ok for a little while but by the end of the 8 hours or so of listening, I was glad I was finished with it.
I'll refer back to my hard copy of the book but I won't listen to the audio version again.