AirServer - Bring AirPlay and AirTunes to your Mac
Features | AirServer
Not available in the AppStore!!!!!!!
i think this is worth a look.
and only one device need it running.
i have it installed on my macbook air(always enabled), so on my iphone or ipad etc etc, i press the airplay tab next to play/pause, and my macbook will be listed under airplay devices.
if i have it running on my mac, ipad2 and apple tv, they all would show up under airplay menu if i'm searching for airplay on my iphone4, choose one and it will start playing right away on the screen of that device(of the 3)
video works good and with sound. I didn't test any apps at time of this posting, although i had this for a bit...
System Requirements
AirServer for Mac requires Mac OS X Tiger / Leopard / Snow Leopard / Lion (Intel/PPC)
AirServer for iOS requires Jailbroken device running iOS 4.0 or newer with Cydia installed
Streaming audio from computer: iTunes 9.2 or newer
Streaming video from computer: iTunes 10.2 or newer
Streaming from iOS device: iOS 4.2.1 or newer
DRM protected content is not supported
Devices must be on the same WiFi network
Streaming from 3rd party apps to AirServer on Mac requires Snow Leopard or Lion.
although it said, on the same wifi network, i cant wait for wifi direct.