I am planning to build a 5:1 cinema system using a Sonos playbar, subwoofer and 2xPlay:1. This will be linked to my LG TV using the fibre optic output from the TV. I also have a Play:5 and 2xPlay:1 elsewhere in my house. As I also use an AppleTV connected to TV via an HDMI cable, will this allow me to distribute AirPlay audio over my SONOS system via the AppleTV? Also will I be able to distribute AirPlay audio to the Play:5 and other SONOS speakers without the inherent AirPlay variable delays I experienced on my old AirPlay speakers? As the AirPlay enters the SONOS system only at the playbar, I assume no lags elsewhere.