Beatstream is the latest app from the folks at Smule (who recently acquired Khush, another music-loving developer, and I can kind of see their influence here as well). Usually, Smule's apps are based around creation of music, but Beatstream is a little more targeted towards listening to your music (at least at first). The idea is that you can pull any music from your iTunes library, and Beatstream will turn it into a game, the game-iest game that I've ever seen Smule make. You basically control an arrow running along a path, and you can tap on the screen to flip it through two different colors, which match barriers running along the pa
