I have an MX-500, and years ago programmed all the functions using my radioshack 1993 remote for discretes, the MX-500 database, and my IR-Clone, as well as learning from my original remotes.

I just realized that one discrete code I wanted to learn to my MX-500 was the "auto input" from my denon receiver, but just realized that my radioshack 15-1993 does not have an audio button.

Does this in fact mean that this radioshack remote cannot do any advanced audio commands or is there a way to convert one of the buttons temporarily to a Denon device code (even if it is just a code sequence on the remote at the time of the MX-500 learning, but not actually programmed on the radioshack remote?

(or do I actually need to consider buying/borrowing another all for one or radioshack remote to get this function programmed in?)