how to do screen+audio recording when mac is muted? I want to record a video+audio on hangout (not sure if on the web or on an app) while i'm in another meeting.

I saw this tutorial using quicktime:
http://www.tech-recipes.com/rx/4587/use-quicktime-player-to-capture-web-video-and-audio/

However it won't record audio when my Mac is muted.

How can record audio as well without actually hearing it when played on my Mac?
I used quicktime + soundflower.

Worked well :)