I am trying to "Mirror" or ChromeCast You Tube from my laptop (Chrome browser) to my 2 Roku players. I keep seeing that the Chrome extension for You Tube in Chrome is not supported to go to the 2 Rokus. Yes, both are recognized on the network. I then add the "Roku URL Player and Remote" extension within the Chrome browswer, which does not work in You Tube. Any ideas on how to do this? Casting and mirroring works on all other devices (besides You Tube) , using apps not sites, but this one is a tough one!