Reset Select Audio to initial state

Originally I went to File>Open Other which pops up
Open other with Network column on left. Click on DirectShow which brings up Video Input and Audio Input. OK on that
Then
Export>Select MP3 on left column of Export. Double click on the MP3 to get the MP3 format. Click on Capture File to select save-as file then it starts recording

That was original. And what I want to demonstrate to my students.

Now,
I delete any previous audio files. Invoke the ShotCut Video Editorfrom my desktop.
I go to File>Open Other which pops up Open Other with Network Column on the left.
I do not have Direct Show.

Instead it brings up the Audo/Video Input. Clicking OK goes directly to recording with only the Filters, SV and Timeline showing.
I press “k”
Click Export>Select which proceeds as before by double clicking on MP3 which pops up the Capture File.
But after selecting the output file, ShotCut returns to the layout with no apparent playhead movement. The only clue that it is recording is that the “Capture File” button reads “Stop Capture” which is the only way to stop the recording: there’s no pause button under the SV and typing “k”.does nothing.

Is there a way to return to the original sequence that includes “Direct Show” without uninstall / reinstall? I’d like to demonstrate what my students will experience.