Version:            (using KDE KDE 3.96.0)
Installed from:    Mandriva RPMs
OS:                Linux

How is there no music visualization plasmoid?
That's a must have eye-candy.

Here are some ideas:
-many visualizations
-no border
-modes:
 -movable, resizable on top of windows and everything
 -as the background
 -over the background behind icons and windows
-transparent if needed
-special effects like:
 -lighting the whole screen a bit on beats
 -shaking the screen on beats

The ideas might sound like too much, but it would attract attention and would make KDE look more like the desktop of the future :)
I don't know if it would be possible though, those libvisual visualizations might be tricky, but rendering on desktop and making black transparent would probably be possible. Those visualizations on the bottom of the stable amarok look more stable.

As for rendering above other things...I don't know. Is that a kwin thing?