I've been listening to the book with an iOS app called Voice Dream Reader, with the voice Amy from Ivona. It's the best quality voice I've found for iOS and it let's me listen to all my ebooks. A real voice is probably better, but I got used to the voice in no time and now enjoy stimulating my mind while I e.g. go to school. Greatly recommended!
All three volumes of the ebook Rationality: From AI to Zombies are complete and available for purchase on Castify. A big thanks to the narrator George Thomas. The total recording time is over 51 hours.
Five math-heavy essays in the second volume went unread because they didn't make for good listening. To read these the ebook can be downloaded on a "pay-what-you-want" basis from intelligence.org.
Thanks again to the original kickstarter backers, we wouldn't have been able to do this without you.
Direct Links:
Volume 1
Volume 2
Volume 3