JP1 Remotes

I have a a Panasonic HDTV 53" PT-53X54 and I frequently use to turn the TV speakers off and turn on the external speakers. The way I currently do is go to the TV menu, choose AUDIO submenu, then choose OTHER and then select FIXED AUDIO OUT. I want to find the code for this item directly so that I ...

I'll try the upgrade or the built-in setup code first and see if it works.
Thanks!!

1. Device: Panasonic DVD/CD Player DVD-S27
2. Type of device: DVD Player
3. Remote model: 15-1994, 15-2117
4. JP1 user? Yes
5. Still have original remote? Yes
6. Checked Yahoo file section? Yes
7. Checked Pronto file section (at R/C)? Yes

I'm using the 15-1994 and I got one 15-2117 as a spare, just in case my 15-1994 dies. What is the main difference between 15-1994 and 15-2117 other than the LCD display, RF extender, and missing four smart keys?