We knew Starbucks was kicking off its new partnership with Apple on October 2nd, but apparently the 'bucks is pulling out all the stops for the launch with a 50 million song giveaway to start things off. From October 2nd to November 7th, baristas across the country will be handing out 1.5 million "Song of the day" cards each day, which can be redeemed at Apple's iTunes store -- though most stores won't have the free iTunes functionality set up for redeeming your prize in-store by the time the promotion ends. There will be 600 stores in New York and Seattle offering up free iTunes downloads via laptop, iPhone or iPod touch on October 2nd, with San Francisco to follow in early November. Starbucks will also start selling "digital release" cards that let you download a specific album online. Starbucks promises to upgrade a quarter of its stores to iTunes-fi by the end of the year, and roll out the functionality to its entire chain of WiFi shops by the end of 2009.