According to Apple, the new AirPlay speakers feature: Send audio content from Apple TV to AirPlay-enabled speakers and devices (including AirPort Express and other Apple TVs). At the beginning I was very excited, because I thought I could have the video part streaming to my TV screen and audio part streaming to my speakers. However, I can only do it with music and not movies. If I want to just hear music through my AirPlay speakers, I could control it on my Mac or my iDevice, which is far more convenient. I am very disappointed. What do you think? is the new AirPlay speakers option useful?