hi, i need a straight answer because i am going to buy an airport express or apple tv. i need one of those just to listen music to my hifi from iphone. dont care about video. i know i can stream music from my iphone or ipad to airport extreme (connected to hifi) with music app. but i need to know if its possible to stream audio only from youtube app. i dont care about the video. i just need the audio to listen. is it possible with airport express? or only with ATV? also i dont want an extra app like airfoil. and also i dont mean inside safari or chrome. i mean inside main youtube app.