I've owned two Sonos ones for 3 years now and I can not get the two to play music via alexa. It simply doesn't work. Countless attempts, no real answer from Sonos on it. I've grouped them together as a group in alexa app (the preferred speaker option for both speakers isn't there anymore, can only select one of the speakers or built in speaker) and it still won't work.
It's like it's not compatible despite saying it is. I love the Sonos products for their audio quality but voice integration is very poor and poorly advertised as alexa compatible. I know you can't link alexa products with Sonos in a group but can't understand why the Sonos groups won't work. If anymore has ever got this working I would love to know how, as it just seems like I'm banging my head against a wall.