The Apple TV arrived! I'm slightly bummed that I can only stream from iTunes, and therefore only use formats that iTunes supports. I haven't found a single other video player that supports AirPlay, though to be fair, AirPlay has only really been around since the new Apple TVs started arriving.
What other software supports streaming audio and video to AirPlay devices? If none, is AirPlay one of those closed Apple standards or have other projects pledged to support it?