not too sure about how many people would upgrade their tv/receiver to make it all work anyway. Cant use anything bought recently and I think there's only a few 2.1 tv's out there not sure about receivers yet. You'd have to go from the appletv to the tv but then have that pass out the audio to the receiver I guess.
eArc sorts that problem with 2.1 buddy. The LG OLED TVs have 2.1 and I guess that all at the CES in January will carry it too