AVS meaning Advanced Visualization System is maybe the coolest part of WinAmp. You can get all sorts of crazy displays synchronized to the music. It starts with basic effects like oscilloscopes, which i can't spell, moving particles, etc.... then it does transitions (think special effects) which is where the coolness really comes out. But to do the really nice transitions you need to make up crazy math shit which I don't understand at all. I mean how am i supposed to just know what will happen if i multiply d by the arc tangent of r squared?