David,
To use any of the codes above, you would keymove a code to any key on the remote that will accept keymoves (almost all of them; the manual won't tell you that). To put (as an example) the command "INPUT: VIDEO 1 (TV)" (which is advanced code 054) on your STOP button (because it resembles a TV screen), you would:

1. Press and hold the MAGIC key until the rabbit comes out of the hat
(the screen will change to the setup screen).
2. Press KEY MAGIC.
3. Press the device key (AUD1 or AUD2 or whatever device you have the 1629 code on).
4. Press the MAGIC key once.
5. Enter the 5-digit function code (00054).
6. Press the key to which the function will be assigned (STOP; if this key is
located in a different screen than the main screen, use the SCROLL key to
access the screen). The IR Indicator will blink twice and the screen will return
to the Setup screen.