This book is narrated by Jack Black. Download via Facebook or by downloading the Volumes App.
There are two options to download, via their app (iOS only), or via their blog which after giving an email address will download an AAC m4a file which can be played on any device supporting AAC audio, such as Windows, MacOS, Android, iOS and even Symbian S60 phones along with almost every modern 'MP3' player and car infotainment system.
Thanks to HUKD for original post.
When I tried to get the app yesterday it said that it was not available in the AU app store. Am I missing something?