im looking at buying about four cold cathodes to pulse to my music.. my question is, if i buy one thats sound activated, can i used the sound controller, like the one that comes with this http://www.newegg.com/Product/Product.aspx?Item=N82E16800888073&cm_re=cathode-_-00-888-073-_-Product , to hook up to other lights or does each light need a controller?