I think Sonos sued the heck out of Google for doing this with Google Home speakers. They won the jury trial but then a judge invalidated their patents https://w

I think Sonos sued the heck out of Google for doing this with Google Home speakers. They won the jury trial but then a judge invalidated their patents https://www.theverge.com/2023/10/10/23910694/sonos-google-patent-verdict-thrown-out-alsup https://www.theverge.com/2023/10/10/23910694/sonos-google-pa... Probably not an easy thing to do to begin with (there are papers on the algorithms involved, last I checked) and the specter of big audio companies coming after you isn't fun either. Edit: Despite that, there's https://github.com/geekuillaume/soundsync https://github.com/geekuillaume/soundsync