Sonos/Echo Amazon music not playing - Unsupported format

I have the same situation also. Music will play for a while and then all of a sudden stop. When I look in the Sonos app on my phone, I see the unsupported format message. Not happy to see not a single reply after a year from the original post. Other searches haven't turned up much either.

I’m getting this exact same issue as well. At first I thought it was sonos, but I’m beginning to think it’s amazon. I’m seeing this same behaviour on my echos as well. Amazon music was great up until like Friday night, then this BS started. My Apple Music works flawlessly in the house. I’d say contact amazon, I’ve sent a few emails to them already, heard nothing back yet. Freaking annoying,

I agree with your observation. It's only when I ask Alexa to play something, it plays for a while but then it stops suddenly at which point I see the "unsupported format" message in the Sonos app. I have not had it happen when using the Sonos app to play from a music service. It strange in that it plays then it stops, you would think if it's a firewall or network issue, it wouldn't play at all. I'm going to do more testing and I will post my observations if I find anything meaningful.

And the issue is random...for stretches it works fine, then other times, nope.

I have been having nothing bit issues lately. Thought we got it all fix then the same message is happening to me as well with amazon music......

Well I’m glad to see I’m not the only one...:$

Still heard nothing from Amazon..

I’m also getting this problem now; started two days ago. Anyone found an answer?

Same problem here. Using Sonos One with Amazon Music in Canada. It started 2 days ago too.

Same problem here. Using Sonos One with Amazon Music in Canada. It started 2 days ago too.

I sent an email to Amazon via the Alexa app - will post ant reply I get. My wifi is fibre optics connection and all other video and audio streaming work fine so most likely an Amazon issue.