Hey there, I have my mac hooked up to the stereo all the time. Some times I feel it's not nessesary though, and I have to unplug the sound from the mac. Isn't it possible via software, to simply tell the computer to use the INTERNAL speakers instead of the external stereo. While the sound cord is still plugged in, of course. I have tried to find such software for the mac, but with no success. Does it exist somewhere?