It looks to me like I have things set up correctly for audio. In fact it was working an hour ago. So, I must have done something to stop it, but I have no idea what. I did reboot the computer.
A point of note: When I came back to the system this afternoon, I launched Cubase a bit before turning on the keyboard, and I got the warning about the “audio is not setup” or something to that effect. I’ve had that happen before, but just waited a bit for the keyboard to finish the boot and it worked fine. But this time it seems to not be working. The print screen below is the Audio Settings in the Studio menu, after complete reboot of laptop and keyboard: