@John_Steinberg, based on comments from other users, ripping CDs from within a Nucleus or ROCK system seems to be hit or miss:
While I don’t have a Roon OS device, a number of other users recommend dBpoweramp and other third-party ripping and tagging solutions using a Windows or Mac computer, and then importing into the Nucleus or ROCK.
Personally I still use Apple Music/iTunes on my Mac for my ripping (it’s a good start and allows synching with my iOS devices), then bring these files into my Windows Roon Core; it’s basic but it works as a starting point before Roon adds its metadata. This may be an option if you still have a Mac.