Apologies if this has been asked already.
I have 3 Sonos Speakers and 1 Echo Dot. I have tried to use the voice control skill but when I try to play certain music , via the dot to one of the Sonos speakers, using the voice control skill I get told I need to upgrade my Amazon music subscription. I already pay for the Amazon Music Unlimited for Echo Monthly. I was just trying to play a specific artists album and got told I needed to upgrade if I wanted to play that album.
I contacted Amazon support and they suggested to fix the problem I should upgrade to the £7.99/month or £79/year plan for playing music on multiple devices.
I just wanted to check that this was correct i.e to use the voice control/integration to play muck on Sonos speakers that you need to be on the £7.99/month Amazon music subscription rather that the single echo dot subscription?