I always used Martin Light Jockey to control my lights. I was thinking it can't get any better then this but I was wrong. Freestyler 512 is 100% free and the best thing interface is totally the same. DMX interfaces it can accept basically unlimited. First time I was !@#@#$%#$^%^&^&*&^*&^(*& thats the DMX program that I can program right away. I'm excited to give this thing a try in real life.