BARNES & NOBLE: online has opened it “Cheap Textbooks, Free Tunes” promotion. Customers who purchase any new or used textbook through Jan. 30, 2010 can pick 10 free song downloads from a choice of 30, including titles such as Au Revoir Simone’s “All or Nothing,” Vampire Weekend’s “Horchata,” Neko Case’s “Red Tide,” Diane Birch’s “Nothing But A Miracle,” Grizzly Bear’s “Cheerleader,” and Gossip’s “Heavy Cross.” In addition, customers who tell 10 friends about the promotion will be able to pick an additional 10 tracks to download.