Hrm, in that case, let’s have you try generating a new RAATServer instance on the Mac Mini with the instructions below.
But please note that this will reset Roon Settings > Audio back to default, so I would advise making a backup of any custom DSP settings you have:
- Create a Backup of your current Roon database
- Close RoonServer
- Navigate to Roon’s Database Location
- Find the folder that says “RAATServer”
- Rename the “RAATServer” folder to “RAATServer_old”
- Reboot the Mac Mini and launch Roon