I'm lost...Are you talking about your Internet connection?
I have a bunch of Chromecast Audio pucks, which act as either digital or analog streamers, and one is connected to each system. I can send anything to any one of them, or whatever combination of zones I want.
They normally sold for $30, but after they discontinued them they were getting rid of them on closeout at 2x$30 - delivered, so I bought a bunch more then so I'd never run out.