Locked away in the Nintendo Dsi are a bunch of hidden tricks and secrets. If you don't know what they are, check out this video and see what they are. Watch and learn how Mario will jump on his own to custom music, how he'll change color and more. Everyone loves a secret, and every Dsi owner should check these out to see what the clever people at Nintendo have hidden away here for you! You'll love the hidden Mario theme song trick!