Get past the glitchy interface, and this visually dazzling, aurally fre-netic blend of screensaver and digital beat mixer will entrance. Hillas dips into more than 700 audio riffs, mouse deejays can drop phat beats and, with each click, morph a rapid-fire succession of pulsating pictures — from abstract color blobs to shots of blissed-out ravers — swirling images on screen like an electronic massage for your brain. B+