If you are just looking for background music or for casual listening I would say the Sonos would be a good option but I have never heard the Cambridge unit. With the multitude of streamer options on the market right now I am sure you will get quite a few recommendations however the Sonos interface (in my opinion) is very hard to beat. I had a Node2 and although it did sound somewhat better through the analog outputs, when fed to my much more expensive dac the difference was negligible.
You may also look at the Chromecast as it may suit you even better considering the cost of your system in relation to how much you plan on using it as well as the price of some of the other streamers out there. But of course as in all things YMMV.
Best of luck.
You may also look at the Chromecast as it may suit you even better considering the cost of your system in relation to how much you plan on using it as well as the price of some of the other streamers out there. But of course as in all things YMMV.
Best of luck.