AMP allows you to wirelessly AirPlay mirror your PC screen and sound to your TV through 2nd/3rd AppleTV. Basically AMP lets you to mirror your Windows computer display through your AppleTV just like you do with your iPhone and iPad.
Feel uncomfortable with all these wires that connect your computer to your TV? Well with AMP installed you do not need them anymore. Once installed, AMP wirelessly transmit your PC screen to your TV.
Computer with WinXP and above. AppleTV 2nd or 3rd.