Glad to hear WAF is up with smartly help. You can use the built in "Music Player" tile to control your Sonos devices individually. FYI I use Sonos S1 (some of my stuff is older), but what is list below should work either way.
Personally I use the built-in Sonos integration to get my Sonos devices into HE (I have a bunch as well). Then using @Cobra Virtual Music Player I can link multiple Sonos units together so that when I move one 'slider' it adjusts all my Sonos units. Lastly I got some help making a custom dashboard tile (3 tiles 'stacked') to mimic the Sonos app on an HE dashboard.
Resulting dashboard controller... (Top slider controls ALL Sonos units volumes and then the other sliders control the listed devices. "Kitchen Sonos" is my master zone for track/play/pause control)
