DappaDonDave
Journeyman Pro
playing videos and music would be no problem its streaming live tv that's the problem so i'm assuming the apple tv would still block the sky go.
It's the app itself, even if you get the cable it is still blocked. I'm guessing its attached to the reason why you can only get two devices for skygo,so you can't get your whole street on it and all pay £1 a month.
If you want a cheapish option, get an Xbox. They are £99 new, about the price of Apple TV. Plus you'll get iplayer, 4od etc on that and the opportunity to play games.