Rearing to make the most of the iPhone 4S' new AirPlay compatibility? How about streaming not just one device to your big screen, but four? That's the setup Firemint is teasing for its next big update to Real Racing 2: four-player streaming over AirPlay. The apps' upcoming "Party Play" feature lets an iPad 2 or iPhone 4S play host to up to three additional iOS devices running the game, piping the s
