Dlitez210 Cool website describing how to attatch Disco Lights to your computer’s parallel port. Then you use a Winamp plug-in to make the lights flash to the beat of the music. This can be built in 3 ways… 8 LED’s on the data lines, 8 solid state relays for regular 120 volt lights or a 32 bit 120 volt light set-up. Thanks Andrew! Link.