I have 4 echos in my house grouped to the “everywhere” group through Alexa. I added my Sonos Play 1 and it works fine by itself with any simple alexa commands. However, I tried to add my Sonos speaker to my everywhere group but it doesn’t seem like this is an option. Can anybody tell me if I can play my music on ALL of my echo devices AND my Sonos at the same time? If I can’t add Sonos speakers to the everywhere group along with my Echo devices, I’m less likely to purchase an additional Sonos like I planned. Isn’t the whole point to be able to play music in all the speakers at the same time?