Sonos inc are still living in the land of make believe. Their strap line on their products page is :
Better by redesign
The latest update brings a new look and feel to the Sonos app. Get to your favourite music faster. Enjoy easier control of your system. And personalise your experience.
Mine and many others favourite music is the music we have bought over many decades and now have stored in our media servers. We now have no way of easily getting it to play on our Sonos equipment unless we invest in a Windows appliance, because they have not yet trashed the Windows app. This strap line is hogwash. .