Freecorder is a browser-based audio recorder software and its free.  Yes, its toolbar does make your browser a bit cluttery. But its worth taking.

Freecorder can record everything that you can hear from your PC speaker.  It can record from your Microphone and it can extract audio from video files.

You need to just click on the record button to begin capturing audio files.
Its only 2 MB.



You can download the above toolbar from the following URL

http://applian.com/freecorder3/download.php