JRiver DLNA player display Card on Google Home Hub

I have the Following:
Home Assistant latest version running on an X86 PC
JRiver Media Center 33 on Windows 10 PC
Matrix Audio DAS-M0408 whole house audio with speakers in each room
Multiple Google Home Displays and Minis
Home Assistant sees the the JRiver DLNA player fine and I can right click on the Card and cast it to one of my google displays but I also get the rest of the Dashboard.
I would like to play the JRiver Media Player through the Matrix Audio unit and have the control screen show up on all my Google Home Displays. I tried to add a picture of the screen but it wouldn’t work.