The app has been built from the ground up for Windows Phone and it shows, offering a showcase of what's possible with elegant use of the Metro UI. The book listening experience is excellent with support for bookmarking, a sleep mode, and a button free mode (control via gestures).
The app also allows you to collect badges (similar to Xbox achievements) and provides statistics about your listening habits, both of which are a clever way of encouraging users to download and listen to more books. Facebook and Twitter integration lets users share their current listening habits with friends (and also acts as a neat promotional tool for Audible).
Marketplace description:
Audible.com, the internet’s premier provider of digital audiobooks and more, is now available for Windows Phone! This free app features the most comprehensive audiobook experience ever, including the ability to download from your Audible library, detailed listening stats, access to the Audible mobile store, and much more. Not an Audible member yet? We’ve included 8 excerpts from some of our favorite authors to get you started.
The Audible app can be downloaded from the Windows Phone Marketplace for free. It is currently only available in the US. However, the does app support Audible.co.uk and Audible.de, so availability is likely to be extended to the UK and Germany soon.