Okay, here is the thing. I would like to buy an ATV, hook it up to my TV with HDMI, and then hook it up to my speaker system through the Optical audio connection. Will this give my the opportunity to use the ATV for Airplay, even though the TV is turned off? I would like to be apple to just have the stereo and ATV turned on, and being apple to use Airplay - like with the Airport Express. Possible?