Sound Bars? Equalizers? what is it called ---Desperate for 1

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Hi all. Does anyone know what's the name of those sound visualizations that's used by dj's or seen in some computer media players. I've searched the WWW and not found a single site or corp. that makes them for car.

To give you a better Idea here's what im looking for.


I'd luv 2have 1of these for my car. You know sound activated & installed sosmewhere in the interior.


So Doesn anyone know what exactly they're called or who makes them.
I'm dying to have 1.

Thanks in advance....