Hello, when I bought this I was not told the fact that someone had completely done away with the cd player.So, I bought a used cd player, installed it,but the problem is it plays the whole cd instead of programmed tracks. If I push 5001 it plays the whole cd if I push 5006 it does the same. It does distinguish between the cd's and does play the right one. I have programmed and programmed and can't find the problem. Can anyone please help me with this thing?