In reply to Sam W:
The problem with the Jongo (and all other similar systems I have looked at )is that you need to use a restrictive app to play music via your computer or phone. As far as I can see, they are always fed from a limited selection of other sources such as iTunes, radio streaming apps, spotify etc, just like the Sonos app, but none of them support youtube.
The system must support youtube, Vimeo and Netflix/Now TV for film audio or I'd never use it.
For those of you suggesting a Raspberry Pi set-up, surely there is something simpler available. I've looked in to this and it's probably beyond my technical expertise or patience.
There must be a plug and play Sonos style system out there that supports Youtube.
Edit - sorry, to be even more of a fussy sh@t, I have no TV, so can't run something like Chromecast that needs an HDMI connection to work (I know, I'm hard work!!)
Post edited at 21:57