How to enable inputs in Vista (stereo mix)

Here’s a video, posted by J4e8a16n on the French forum that shows how to enable hidden devices in Vista. (requires Flash)

http://www.screentoaster.com/watch/stU0hUQEdNR15XRFlYU1lY

There is also information on the Audacity wiki about this:
http://wiki.audacityteam.org/index.php?title=Windows_Vista_OS#Using_the_Control_Panel_to_select.2Fenable_recording_devices