All I can now do is cast a YT video from Chrome on my PC to Kodi using the Play to Kodi addon.
HTPCs: 2 x Chromecast with Google TV Audio: Pioneer VSX-819HK & S-HS 100 5.1 Speakers Server: HP Compaq Pro 6300, 4GB RAM, 8.75TB, Bodhi Linux 5.x, NFS, MySQL