I had speaker wire run from central location to 4 rooms and a deck when my home was built in 1998. I run speakers in each room from my main system via a niles speaker switch box. These days I mostly stream wirelessly from my music server using Logitech Squeezebox and Plex app on various devices. Both Squeezebox and Plex can be controlled remotely from computers or portable tablets or phones. I think Sonos could work similarly with a single box streaming and using apps on computers phones tablets etc as controllers including volume off the Sonos streamer. So you can switch on speakers in desired rooms and have full wireless control of streaming. Should work nicely with just one Sonos streamer and using whatever devices you already have as wireless remote controllers. Sonos would be a digital wired connection to a dac or analog into amp/preamp using built in Sonos Dac. Using a dac of your choice would provide a means to help optimize sound quality with dac of your choice.
Good luck.
Good luck.