I have Comcast DVR connected to my TV via component cable. I would like to somehow run one speaker using a wire about 30 feet to the back of my kitchen. The reason I want to do this is so I do not have to turn the TV on too loud when I am in the kitchen. Is there a way to switch between the two audio sources easily, say with a splitter. Ideally, when I switch the audio to the back of the kitchen, the TV will not be outputting any sound and vice versa. A second option if I have to leave both on would be the ability to adjust the volume of the speaker with a knob on the external speaker. I do have an Onkyo receiver but it is not connected at the moment. Thanks.