There isn't one, currently. You could group all rooms in the controller app, then tell Alexa to play in any of the grouped rooms, and they'd all play.

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Yeah unfortunately the Sonos app "trumps" Alexa, so basically you need to do the grouping in the Sonos app first, before being able to control with Alexa. Really goes against the whole convenience factor of Alexa in a huge way, so hopefully this will get fixed soon. I'm assuming it's a Sonos issue because this is basically how their app works anyway -- each speaker seems to remember what other speakers it was grouped with and what the group was playing, and Alexa doesn't seem able to override this. Also see https://en.community.sonos.com/amazon-alexa-and-sonos-229102/groups-and-alexa-6791450/index1.html#post16151174

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Yeah unfortunately the Sonos app "trumps" Alexa, so basically you need to do the grouping in the Sonos app first, before being able to control with Alexa. Really goes against the whole convenience factor of Alexa in a huge way, so hopefully this will get fixed soon. I'm assuming it's a Sonos issue because this is basically how their app works anyway -- each speaker seems to remember what other speakers it was grouped with and what the group was playing, and Alexa doesn't seem able to override this. Also see https://en.community.sonos.com/amazon-alexa-and-sonos-229102/groups-and-alexa-6791450/index1.html#post16151174



Actually, Amazon's Alexa Voice Service (AVS) Multi-Room Music SDK that allows for grouping of third party speakers and Echo devices via Alexa Voice Service not complete yet. Estimated date is in early 2018.



http://phx.corporate-ir.net/phoenix.zhtml?c=176060&p=irol-newsArticle&ID=2297100

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I thought you could say....



"Play [some music] everywhere"



... and it would play in all rooms? I'm sure I read that somewhere

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