Note: AirPlay Mirroring will only work for “the new iPad” (3rd generation) and the iPhone 4S or later devices. Other AirPlay functions like YouTube over AirPlay will work with older supported devices.
If you would like to project your iPad’s screen to any PC on your network, you can do so with AirServer. AirServer runs on your PC and broadcasts its availability to all AirPlay mirroring capable devices on the same local network. With version 0.9.3.1 (currently in beta) and onward, you can stream audio too.