JBL speakers with sub

I have a built to own presario 7000 came with ME but put XP on it. I have a creative soundblaster live sound card that came with the computer and the JBL's came with it. All the cables are color coded so its real easy to set up. When everything is plugged in i can only get sound through the sub and not the speakers. I checked the soundblaster website for diff drivers but there auto-check said they were up to date. Is there some sort of setting i am missing. I have a differant set of speakers when connected directly to sound card they work when connected to sub and sub connected to sound card same problem.