FYI this does appear to be the problem. In my version of PsychoPy 2020.1.2 on MacOS libportaudio.2 is appears in the folder “Frameworks”. Copying the following list of files to the “lib-dynload/pyo” directory allows me to import pyo without the previous error ("image not found - even when typed to the shell). BUT this does result in a bug where the window doesn’t open, and means that I cannot reopen PsychoPy when I close it and reopen it.
Hoping to take another look at this soon as i am also trying to use the mic component, but posting update here incase helpful.
Becca