No sound with mirroring
I successfully mirror my iMac to my Apple TV, but I don't get sound to the Apple TV. I Opt+click the volume icon on the menu bar, but Apple TV is not an option under output. When I go to Sound preferences, my Apple TV shows up as an output option, but with the Type of "AirPlay".
Does mirroring provide sound to the Apple TV, or is that only an option through AirPlay?
iMac, OS X Mountain Lion