Apple and Starbucks have expanded their long-running “Pick of the Week” promotion to include apps. The promotion, which debuted in April 2008, has offered a complimentary song or music video every week as a free download for Starbucks customers, via a card with a redeemable promo code on the back. Cnet reports that the apps are being distributed in the same manner, with the first app to be offered being Shazam Encore, the music-identifying…