We're investigating an outage affecting music playback for some Spotify users. We will update this thread when the outage is resolved.
Best answer by Ryan S
If you're still unable to connect with Sonos players from the Spotify app on any device, I'd suggest that you give us a call on our support line. A technician will be able to help look into the system and see what's causing your trouble. There may be trouble with a router or network configuration here, or something account related.
Because of how long this thread has gotten, we're going to close it down, but if you see anything new come up, please feel free to open a new thread, or join an existing one.