You're guessing wrong. Sonos is not beloved. I've heard all about the S1/S2 nightmare and I don't have a solution to it. I detested Sonos for that and tried to

You're guessing wrong. Sonos is not beloved. I've heard all about the S1/S2 nightmare and I don't have a solution to it. I detested Sonos for that and tried to avoid them because of it, but no one has stepped up. Other multiroom audio solutions have sucked in my experience, so far. Maybe Bluesound stepped up, but that's it. And, kind of agreeing with you, I do stick with real speakers from real audio companies ... I just get the amps and multiroom app from Sonos. And, back on point, to not be able to do a simple cast of youtube to Sonos and, I'm guessing, potentially Roku, is just silly and I jetison Youtube because of it, not Roku or Sonos. Doesn't matter who is right or wrong, that's the impact.