[daffy4u]

Originally Posted by AnemicOak

Worked for me, thanks. Says it will expire on 09/06/14

Here's the blurb.

* Terms and conditions:
The promotion is valid for a limited time only and while promotional items supplies last. The promotion applies only to items sold by audible.com. The same items sold by other sellers (e.g. audible.co.uk, etc.) do not qualify. Claim codes cannot be resold, transferred for value, redeemed for cash or applied to any other Audible account, except where required by law. The coupon is valid for audio content only and will expire 60 days from adding to account. The offer is only available to customers in the United States. Audible account required. Other terms and conditions apply, including those available at http://www.audible.com/gift-terms. If you violate any of the terms or conditions, the promotion will be invalid, and the offer will not apply. Audible reserves the right to modify or cancel at any time. Void where prohibited.