Hi I'm thinking about picking up an AirPort Express and hook it up to my home theater system so that I can use it to play music from my MBP over the network. But before I go out and buy one I wanted to make sure it can do everything I want as it seems a bit unclear to me.. So, can the AirPort Express do all these things simultaneously? Join my existing wireless network Play my music over the said network from my Macbook Pro and, as a bonus, from my wife's Windows laptop (she uses iTunes on it as well) act as a wireless bridge for my PS3, as this would no doubt be faster than the PS3's built-in wifi which is.. well, awful. Can it pull off all of these at the same time or would I have to settle for some of the mentioned functions but not all? Thanks!