I'm trying to connect my Macbook (white, purchased in early 2009) to my TV. I have the composite (red, white, yellow) cable plugged into my TV on one end. On the other end, the yellow is plugged into apple's mini DVI to video adapter which is plugged into my Macbook, and the red and white are plugged into an adapter that is plugged into my headphone jack. Audio is working through the TV, but video is not. Any advice?