I recently purchased a set of Apple Pro speakers (cheap) because I thought one of my old speakers had failed. Well Now that I have the Pro speakers I would like to go ahead and use them but here's the catch. I would also like to use my sub from my old set of speakers. With the pro speakers pluged in if I plug the sub or anything else into the headphone jack in the back of the computer it will mute the Pro Speaker jack. Is there anyway I can get output out of both the headphone jack and the digital out jack simultaneously? This way I can use the Pro speakers and my sub.