I didn't think I'd care, but after standing in line for 10 minutes this morning at Starbucks this morning and hearing a few songs that I'd love to listen to later but probably won't remember to download when I get home, I was jealous of the people who have iPhones or iTouch iPods and could download and enjoy the music on the fly. Still, it's so specific - only 1 million people with iPhones, and how many of them will use it at Starbucks? There really needs to be an open standard that stores can implement to allow their actively playing music to notify mp3 players of what song is playing and give the offer to purchase it. More than Starbucks I hear songs I like all of the time in clothing stores (GAP, American Eagle, etc), and often its impossible to even find out what the song is. The more places this music discovery and purchase feature is offered the more valuable and attractive as a sale point it will be. Also, if this was an open standard for all wi-fi enabled players, maybe we'd see wi-fi become a standard feature in product build moving forward.
