Folks, I've been searching around the Net for an answer to how to get learned codes working on the PSP, and I've finally got it working!
It's a tribute to the programmers at Sony -- I'm pretty sure they weren't expecting this use case when they designed their system, but it works like a charm.
Step 1: Learn your codes using the base station's IR receiver and the PC client as documented elsewhere.
Step 2: Inspect your RC Data folder (should be a desktop link named something like that after installation) for the file created after saving your settings -- it's a plain text file ending in .RCD
Step 3: Move the .RCD file to the appropriate spot on your PSP's Memorystick Duo card. This is easy to find if you've already set up another remote control, say for another input.
Step 4: In the Remote settings area of the Settings control panel, choose the Custom remote, which in my case was displayed at the bottom of the list.
Sorry for the lack of gory details. I'll come back and post again with more specific instructions, but I wanted to get the word out since I don't think may folks know this is possible.
Oh, and for those users looking for the List button on a Scientific Atlanta 8300HD cable set-top box, Sony has published a remote control file for that on their Additional Data site. It works on both PC and PSP platforms, allowing me to watch and control recorded content.
Oh, and while I've got your attention, check this out:
I've got the following wild thing working now:
Remote controlable iPod dock
LocationFree B10 with additional IR blaster (got it at BestBuy's Magnolia HT desk)
Linksys 54G wifi router
Verizon EVDO cellular data service
Magmount car antenna
Verizon EVDO PCMCIA card
Top Global EVDO/Wifi router, powered by 12V inverter
So I can watch content from my video iPod, with remote control capability, on my PSP, within about 50 feet of my car! (or anywhere there's wireless Internet)
This is extreme, but it was fun getting it all working together.