Redirect speaker output to microphone

Can I redirect the output of the speakers to my microphone? I don't want to turn on the speakers.

What I want to achieve is, say I'm doing a video chat and want the other person to listen to the sound. I'd like the sound from the speakers to be routed to the microphone. It'd be helpful while I'm using headphones.

Solution 1:

You need only to install Pulse Audio Volume Control

sudo apt-get install pavucontrol

Open Pulse Audio Volume Control, navigate to the Recording tab and select your application that is recording sound. Then it should provide you with a drop down menu with source options.

Enjoy!