Starbucks has struck a deal where the WiFi iPhones and iPods will be able to monitor the playlist inside the shop. You will also be able to purchase the currently playing song as well as any of the 10 previous songs played. Free WiFi for iPods and iPhones for the iTunes Music Store.

Only a few cities will support this by the end of this year, then a few more by the end of next year, and full support by the end of 2009.