What would I need to buy in order to use this to control my stereo at home? I have a stereo exclusively dedicated to playing the speakers located throughout my house. However, it's a pain because each room only has volume controls on the walls so there's no way to control the music playing. So what I do now is just leave it on a radio station 24/7. Is there something I could buy and hook up to my existing stereo to play my itunes over wi/fi so I could control the music with my iphone? Since it will only be used for music, it seems a shame to fork out the cash for an appletv.