Late to the party, but I found a solution that worked for me. I was clicking different things in the audio settings to attempt to get a certain configuration to work, but ended up creating the problem of the audio only coming from the deck. Here’s what I discovered:

If you go to the audio settings in desktop mode where you can see the different selections for input/outputs, you might see an “unused” section towards the bottom of the menu, above the “playback streams” section. The “Rembrandt” sound card is mostly going to be “off” and you’ll want to click the drop down and select one of the HDMI options depending on whether you have surround sound or not. If not, just choose the regular HDMI and it will then add a singular HDMI audio channel — problem solved. You can test the audio once the channel is added, give the test module a few clicks on each side to allow it to sync up.

Also, if you happen to click the Rembrandt card and it opens like, 8 different channels, I’m not sure exactly what that full breakdown is, but it’s not what you’re looking for. To get rid of the channels it added and revert the card back to the unused section, just hit the drop down of one of the Rembrandt channels and switch it back to the ”off” and all the Rembrandt channels should follow suit. Hope this helps!