the Kerith website, or here. You have the option of either listening to it online, or downloading it to your preferred flavour of MP3 player.
I want to say a huge thank you to Rosie Donnan who oversaw the recording and production of the audio book. Just having to listen to me read the entire book deserves some sort of award! Also to those who lent their voices to reading the chapter headings, Bible verses and personal stories - see if you can work out who the mystery voices are.
I hope you enjoy it :)