Hi,
this solution might help in your case, too. Between Windows and MacOS, only the file path should differ, so
- Open “/Applications/PsychoPy3.app/Contents/Resources/lib/python3.6/psychopy/sound/backend_sounddevice.py” with administrator rights
- Search for
self.sounds.remove(thisSound)
and remove.sounds
- Save the file
- Restart PsychoPy