Originally Posted by allaboutmusic

Assuming you're using Windows, the key thing is to make sure your recording source is set correctly. Double click on your speaker icon in your System Tray. Choose Options -> Properties. Then select "Recording" under the "Adjust properties for..." menu. Select OK / Apply, and then in the main window, select Stereo Mix or Wave or whatever is appropriate. Once you select that, you can use any recording software including the two recommended above.