Is this possible? And if not is this a feature that can be considered for future updates? It is an incredibly simple feature to implement so I am amazed it hasn't already been implemented, and it seems a shame to spend so much time building playlists in Sonos that I can't make use of on other devices.
Just to clarify, all the songs I want to download/export are on my network, i.e. I'm not talking about downloading anything from any streaming services.
Best answer by controlav
The easy solution is to use playlists from the music service you using (eg Spotify), instead of Sonos Playlists. You can use such playlists on your Sonos system, or in the car with the Spotify app there.