My understanding is that Airplay allows you to stream audio and video wirelessly to and from your iOS devices and Macs. How do you enable it? I upgraded my iPhone 4 to 4.3.1, I've got a Mac Mini (10.6.7) connected to my HD TV, and I also have a MBPro (10.6.7). I'd love to be able to stream directly from my iPhone to my Mini (and vice versa), but I'm not seeing the Airplay icon anywhere. Is there a setting or preference I have to turn on? I've turned on Home Sharing on both Macs, and all devices are using the same iTunes account.