There are four boys in this house and its a pretty noisy place. Each of us have our own way of finding a bit of peace(mine is getting up extra early and having a cup of tea in a silent kitchen, recently my nine year old has decided to join me..) and my eleven year old listens to audio books in his bedroom. (That is, when the option of a computer screen, Youtube and a pair of headphones have been ruled out.) So, I was putting away pyjamas the other day heard a excerpt of this.
Wow, I was really impressed. Its great! Adventurey, fairy tale-ish, funny and most importantly for an audio book, there's an excellent narrator. Its the second time my son has taken it out of the library, so he's a fan, and later at bedtime, when I decided I was too tired to read, his four and nine year old brothers listened to it with him. In silence. Bliss.
The one above is the second in the series, and I think there is a third too. So far I have found the first on audio here and all the books here. But I'm pretty sure the library would have the lot.