Originally I was going to get an AirPort Express for music streaming, but then I thought for £20 I could just get an Apple TV. So... 1. Will the Apple TV work for music streaming without it's HDMI cable connected to anything? It will be plugged in to my home cinema system with an optical cable. 2. Does AirPlay work on any WiFi network? Or does my router have to support something special? 3. What's it like for audio streaming? 4. Video AirPlay. Is it restricted to which apps it works with? Does VLC work or does AirPlay just send the video file to the ATV?