Can anyone recommend a solution for the following. On my PC I've got a 5.1 surround sound setup, and a set of 5.1 headphones connecting to my Audigy 2 soundcard. Later at night I'd rather use the headphones so as not to wake up the rest of the house. It's a serious pain trying to get to the back of the PC to manually remove the cables for my speakers and replace with those from my headphones. Is there any external box solution where I can keep both permanently connected and simply flick a switch to change from one to the other?