setting up multi-room music in Alexa app

As far as walking in room now say Living Room - what device are you using as the Alexa?

You should be able to walk in room and say "Alexa play Bruno mars in Living Room" where Living Room is the name of the Sonos zone.

If I just walk in and say, "Alexa, play ___ radio", it tells me I have to add the Sonos One skill, which is installed. Unless there is a separate "Sonos One" app. I searched for Sonos One app and only the Sonos app showed up.

If I walk in and say, "Alexa, play ____ radio in living room", it says there is no device called living room. It then goes on to say that I should specify a device or enable multi-room music in the app.

I'm going to try and unplug the Ones, the PlayBar and Sub and see if something resets.

As far as walking in room now say Living Room - what device are you using as the Alexa?

You should be able to walk in room and say "Alexa play Bruno mars in Living Room" where Living Room is the name of the Sonos zone.

Not sure which device is being used as the Alexa, I assume (1) of the Sonos One's. I didn't know I needed to specify a device.

Ok - if you have a Sonos One you should be able to say "Alexa Play Bruno Mars" to it without a room name and it should start playing along with any units paired or grouped to it.

What happens in your case?

You installed the Sonos skill in Alexa app correct?

https://en.community.sonos.com/amazon-alexa-and-sonos-229102/new-to-sonos-or-alexa-how-to-set-up-6791327

Ok - if you have a Sonos One you should be able to say "Alexa Play Bruno Mars" to it without a room name and it should start playing along with any units paired or grouped to it.

What happens in your case?

If I walk in and say, "Alexa, play Bruno Mars", Alexa says, "Hmm, to do that you must first enable the Sonos One skill in the Alexa app and then (ask me?) to discover devices." That may not be the exact quote, but pretty close.

If I go to the Sonos skill in my Alexa App (on my iPhone) the only option is a button to "disable skill" and a button for "settings."

In settings, Account Linking has a green, "Linked" and advanced settings, which brings me back to Devices. The (2) Sonos One's show up in both Alexa & Echo and All Devices.

By the way, thank you for your time today.

Hi

This type of issue is normally down to one of three things:

1/ Duplicate device names - Alexa prefers that names for Devices, Groups and Scenes are unique,
1.1/ Please open up the Alexa App>Smart Home and make a note of any duplicate device names;
1.2/ You can then change them in the source app. e.g. Use the Sonos App to change the name of Sonos players. (I personally use the naming standard Room Name + Device type. e.g. Kitchen Sonos, Kitchen Echo Dot, Lounge Sonos, etc)
1.3/ Once you have changed any duplicate names then please open the Alexa App on a PC (https://alexa.amazon.co.uk or https://alexa.amazon.com)>Smart Home>Devices and select 'Forget All' followed by 'Discover'. NOTE: This will remove ALL Actions from ALL Alexa Routines! (Only the PC version has this functionality.)

2/ Some form of Account Linking or Authorisation has not completed successfully. There are a number of causes for this and it's best to try these steps 1 at a time and test before moving on to the next step if the problem persists:
2.1/ Open the Alexa App>Skills>Your Skills>Sonos and 'Disable' followed by 'Enable';
2.2/ Ensure that you don't have multiple Amazon accounts logged into different Apps on your device, as this can confuse the Amazon Authorisation. If yes, then please log out of the other accounts and then complete step 2.1 again;
2.3/ If the problem still persists, please logout of all Amazon accounts then select the Alexa App>Skills>Your Skills>Sonos and 'Disable. Now power down all Sonos devices for 10 secs, allowing for any wired devices to boot before booting the remaining Sonos players. Now log back into the Alexa App>Skills>Sonos and 'Enable'

3/ If the problem persists then an entire reset of the Authorisation & Account Linking process is required:
3.1/ In the Alexa app, select Skills>Your Skills>Sonos and then 'Disable';
3.2 In the Alexa app (Web version), select 'Smart Home>Devices'. Now select 'Forget All' at the bottom of the screen;
3.3/ In the Sonos app (Android or iOS), select Settings>Room Settings and for each of the Sonos One's sign into 'Voice Services' and select 'Remove Amazon Alexa from this Room';
3.4/ If you have any wired Sonos devices, please power down for 10 secs and then switch on and wait for it to boot;
3.5/ Now power down all other Sonos Players for 10 secs then switch them back on and wait for them to boot;
3.6/ In the Sonos app, Select Manage>Add a player or sub' and add the Sonos One's again. This will complete the set-up process again;
3.7/ In the Alexa app, select Skills>Your Skills and ensure the Sonos skill is 'Enabled', if not please 'Enable';
3.8/ In the Alexa app , select Smart Home>Devices>Discover. Ensure that your Sonos One's are displayed correctly and not shown as 'Off Line'.
3.9/ Also check one last time that there are no devices with the same name. Remember, if there is a need to rename any then you'll need to select 'Discover' again.

Let us know how you get on.

I really cant believe that Sonos isn't supported in Alexa App as a MultiRoom device.
Without this it is a deal breaker.
Effectively Sonos isn't Alexa Compatible.
Amazon have released SDKs for.
The Sonos kit I have bought is going back.
Sonos if you don't get your act together, when the Amazon HiFi system / speakers comes out you will massively loose out.

Yeah the part where you can’t use Alexa with multi room Sonos speakers is a deal breaker. Sonos is totally screwed when Amazon decides to make their own high end speaker system. I wonder what they plan on doing? Or in this case not doing.

Well they aren't scr**** if people like the Sonos App and its many abilities to use multiple services. Sonos speakers do multiroom with Sonos speakers. Alexa is just a means of voice control for them. Voice control is nice for picking a song. But exploring music and creating playlists is far better in app.

Sonos does multiroom sync at a local level and does not use a cloud service to do the sync (I'm not even sure how good Alexa sync for mutli-room really is). Sonos has a lot going for it at the local network level vs. a cloud based system in Alexa. And Sonos I am sure has ZERO interest in maintaining sync with a cloud based service - they are in the business of selling Sonos units not Alexa units.