Imagine this on your arcade, or in your house.

[BASS!]

This is an amazing tutorial I found on make about building a crazy 3d wiremap. I now am dreaming about where I would use it, but man if this visualized audio imagine the fun you could have with it.
[youtube]http://www.youtube.com/watch?v=_rDpPex4Agk&feature=player_embedded[/youtube]
http://www.instructables.com/id/How_to_Build_a_Wiremap/

[Ummon]

The distance to frequency thing is pretty cool, but essentially the movement is done through the angle of projection. Back in '92, I was playing with the same thing at a party, where there was a laser parallel to the deck, and I spun and toss a bit of string in its path, resulting in what appeared to be a red dot madly flying around. In this case here, the 'objects' displayed by the beam are moving.