Under the microphone section, click on 'Soundflower (2ch).' If you would rather record ONLY audio and not the screen, click File>New Audio Recording, and do the same thing. Click the little arrow on the side of the Quicktime window. (The only downside is that you will not be able to hear audio through your speakers as long as this is selected.) Now open Quicktime Player and click on File>New Screen Recording. Make sure your in the 'Output' section, and click on 'Soundflower (2ch).' Now your computer is outputting all of it's audio through the Soundflower (2ch) extension. It shows up as an audio device to just to make everything even easier. Click on 'Output.' There should now be two more options there, 'Soundflower (2ch),' and, 'Soundflower (64ch).' This is the extension that you just installed. Once Soundflower is successfully installed, visit the Sound tab in your System Preferences again.
