Not Able to Record or Export to any format other than Midi

For some reason Audacity is not working correctly for me - never had an issue before.

I import a Midi file, hit record, the file plays, but it doesn’t record. (the audio wavetrack is a flat line) At the end of the play, I only have the option to save as a midi file.

How can I resolve this?

Since MIDI isn’t audio, my guess is Audacity is making the MIDI instructions play the computer’s built-in MIDI interpreter. So to record it, you would need to record “Music playing on the computer.”