So basically. I have two computers sharing pretty decent speakers. Computer 1 is connected to speakers and Computer 2 is connected to Computer 1's Line in port so that they share the speakers. The sound was working fine until recently and it's driving me nuts. I play sound from Computer 2 and all the sudden, the sound gets cut off as if it's muted. Computer 1 isn't on mute at all. The sound from Line In comes back if I change the volume of Computer 1 and after a couple second, the sound would go off again. Any ideas?