'SoundPTB' object has no attribute 'isFinished'

Hi, forgive my ignorance! I think this might be a solution to my similar issue here:

However, I can’t seem to find the folder location C:\Program Files\PsychoPy\Lib\site-packages\psychopy\sound.

Psychopy seems to be installed to this folder, but there is no Lib folder in that location (or any other folder)

C:\Users____\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\PsychoPy-2023.1.2