The newest version Audacity in my mac cannot record audio on display (It records my voice through mic very well). It happened to the older version of audacity too. I tried to adjust devices and other settings in the audacity and the mac system settings. It still does not work.
I found an error message saying: the plugin ausoundisolation failed to register, when I tried to enable it. Not sure if this is the reason.
want to know some clue from you all. Thanks.