Visual Music Generator?

Looking for a way to automatically generate a colorful video display to go along with music. This kind of add-on product is typically used by VJs and personal music players (iTunes) to fill the screen while music is playing. The industrial products are apparently not licensed for us in this manner and cost more than I want to spend on this.

Soundspectrum G-Force may allow it in a stand-alone mode but a configurable FCPX plug would be ideal.

TIA,
Chip