I have three Play:1 speakers that I was running on my Internet wireless. I no longer have Internet. I do have a new wireless LAN set up and would like to use it to run my Sonos system with a music library on a local Mac mini providing the source for the music I’ll play on it. Is it possible to set this up and operate it  with no Internet connection? Setting it up seems to require that I log in to my Sonos account, which of course can’t be done without Internet. I can tether my cell phone to my cell data, but doing that disconnects me from the local wireless network that would run Sonos. 

Is it possible to set up and run these three speakers without having Internet access? Any guidance would be greatly appreciated.