ok sorry-
One of the first thoughts both the wife and I had was, that it would make a perfect remote; I hope this becomes a reality. Due to Apple not allowing third party apps except via Safari, the first implementation will likely be browser based. Guess it would have to tag into the WiFi for connecting to RF/IR blaster, etc.
I don't think at present there is a way to stream to an AE (that I can find, anyway). Although many posters conjecture the ability is there and may be turned on with Leopard timing.
ken