Hi there - My echo devices (all 6 of them) started telling me "sorry I'm having trouble playing the music" - two of my devices would play videos and all of them would talk with me so I figured there was nothing wrong with wi-fi signal - someone mentioned groups in a comment section so I deleted the everything group and the individual devices then were able to play music - I then reinstated the everything group and everything is working just fine 🙂  ... View more