Listen to Microphone on Windows 7 and Ubuntu

Listening to Microphone on windows 7:

Right-click on the Volume control icon and select "Recording deivices"
Right-click on Microphone/Line In and choose Properties
Go to Listen tab and check Listen to this device"
Press Apply or OK to activate the changes.


Listening to Microphone on Ubuntu:

Install Jack: sudo apt-get install jackd
Open Jack control from Audio and Video
Click on "Start" and then on "Connect"
Select each capture_n, connect to the system in right panel and press connect


You can use this feature to connect other audio devices to your computer.

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