I have 3 DVD players with composite output that I would like to merge and input to my amplifier, so that by turning on just one of the devices at a time, I will be able to watch that particular player. In order to do this, I'm going to need an RCA cable with 3 RCA females on one end, and 1 RCA male on the other. Of course I'll need 3 such cables, since I would also need one for my left and right audio outputs on the players. My only question though...does anyone make such a cable, or do they only make Y 2 to 1 RCA cables. Anyone?