I got it!!! I needed these codes too, but after studying the Harmon Kardon remote a little, I found out you can get discretes from the remote. This button has 2 color modes, green and red. All you do is you press the HDMI button twice fast to switch between modes. make sure the second time you press it that the light on the button is still on.

Now for the explanation of the modes. Press the button once. If it turns red, then the button will do the action that is written on the button. If it turns green, then it will do the action written above the button. Use these modes to learn the discrete codes to your remote.

I am still in the customers house right now, and I was jumping for joy...