As found on the promotion webpage:
Starbucks has created a free music mix to complement your Frappuccino® beverage. Featuring electrifying summertime favorites. Your free Frappuccino® Beverage Music Mix is available to download on iTunes now!
If you don't have iTunes installed you can download iTunes for Mac or Windows, free of charge at www.iTunes.com
Enter the code found on the promo page and your free music downloads will start immediately.
The music playlist features:
"Nothing Like You"
"One Life Stand"
The Bamboos (featuring Kylie Auldist)
"On The Sly"
Black Rebel Motorcycle Club
Shout Out Louds
Offer expires 8/31/2010.