For those that have separate Streamers & DACS

@badgerdms in the Roon “audio” menu under settings you need to find the M3 and enable it.  Once you do that, you need to select the M3 as a zone.  If you have done that already, then I need to dig a little deeper.  

It's not showing up on Roon to enable at all.   If I use the USB input, it's there, not when I switch to the ethernet port.  A little baffling.

@badgerdms odds are you aren’t getting an IP address on the device.  Restart your router.  If you have a Mac Mini on your network turn it off while you try to connect the M3. Restart the server feeding the M3.  
 

those are next steps

Thanks!  No Mac minis but some other Macs in the house.  I've rebooted once but will shut down the macs and try again. 

Another for/with Bryston BDP3