I am not sure if every 360 comes the mine did but, mine came with two sets of cords on the same cable. One is your normal red, white, and yellow, then the other is blue, green, and yellow (I think). On a standard tv, you just need the red, white, and yellow ones. On an HDTV, you need the blue, gree, and yellow. I had to use both sets to get sound. It works though
