Amazon is offering a free $5 credit for installing the Audible app for Fire TV. You don’t need to sign up for the service or do anything other than installing the app. The promotion page says the offer ends tonight at midnight, but the email I received informing me of my free $5 credit says the offer ends 11/14 at midnight. Either way, there is little time to get your free credit. You must have never installed the app before to qualify for this promotion. You’ll receive an email within 48 hours informing you that the $5 credit has been applied to your Amazon account.