Found a thread similar to this here that pointed me to the same schematic I've got, here: Schematic Probably going to order the IC's i need off of digikey and give it a whirl here sometime soon. Couple things I'm planning on doing though: 1) microphone as audio source 2)eq style light bars I'm thinking for (1) that I'll be able to wire in a MIC to the input pins but I'm not sure how much (if any) amplification of the mic will be needed. There really were no application notes in the datasheet. Here's the one i have picked out: MIC (2) is a little more complicated. I'm hoping that I'll be able to use a LM3914 to drive LED's like light bars instead of the 2n3904 driving LED's as shown in the circuit. I'm just not quite sure of the output of the circuit. I'm guessing its a logic high/low output which in that case i would not be able to use the driver. I just haven't had enough time lately to simulate it and see, was wondering if anyone could shed light on it.