I can't tell from your reply whether you tried the codes and they didn't work or if you need different functions.

Make sure that setup code 31313, 31570, or 31027 is assigned to AUX, and that the remote blinked twice indicating that it accepted the setup code.

Discrete Input - Tape       60819
Discrete Input - Video 1   60755
Discrete Input - DVD       62267
Discrete Input - Tuner     60851
Discrete Input - CD/DVD 60787
Discrete Input - Video 3   62338
Discrete Input - Phono     60723
Discrete Input - Video 2   60794
Discrete Input - AUX        60915

If you like any of these, you can assign the code to a button by:
press AUX
1) Press Setup until 2 blinks
2) Enter 994 (2 blinks)
3) Press Setup briefly
4) Enter the EFC (e.g. 62338 for Video 3)
5) Press the button you want the function assigned to.

If you precede step 5) by a brief press of Setup, that makes a shifted button. Then during normal operation press setup followed by the button to send that signal.