u can use it to to record mics and instruments and turntables onto yur computer ,u can use cool edit to record those inputs,u can use yur tables to record samples which u can then sequence in fl studo,to hook it up to your computer run a wire from the output of the mixer to the input of your soundcard to hook up your turntable to it simply plug in your turn table wires into a channels inputs,u might need phono to jack converters for this,this hardware can help u wether u use fl or not it lets u send audio signals into yur comp so u can record it thats its main purpose