Just got mine, so this is still good!!!
Note the offer details:
* Promotional offer valid for a limited time only and subject to change. Promotional offer is valid from September 3, 2009 12:00 AM PDT through September 6, 2009 11:59 PM PDT. You must redeem the credit by September 6, 2009 11:59 PM PDT.
* The promotional offer value is $1.29; if you don’t use it fully for a song, the remaining credit will remain in your account and will be applied to your next MP3 purchase. You may use it to purchase a song priced above $1.29, in which case your credit card will be charged for the amount in excess of $1.29.
* Promotional offer can only be used for MP3s sold at Amazon.com.
* Promotional offer limited to one Amazon MP3 promotional credit per customer.
* If you receive an error entering your code, be sure to check that you've entered the code correctly and be sure that the promotion is still valid and has not expired. If you still receive an error, contact Customer Service via Amazon MP3 Support.
* Amazon MP3 music downloads are available to customers located and with billing addresses in the 50 United States or the District of Columbia only. You must have an Amazon.com account and accept the Amazon MP3 Service Terms of Use to redeem the code.
* We reserve the right, in our sole discretion, to terminate or modify this promotion.
* See Terms and Conditions for full promotion details.