That's the main problem with that system. The double screen makes it unique and uncomfortable to emulate

Just make sure that the name contains the text "disk 1" or "disc 1" and they will be picked up like multi disc games.
Once inside the game, you can switch the disc in the in game options.

More info at
http://www.retrox.tv/multi-disk-support/

I'll try to add it in a future release

PBP files are not playstation games, they are PSP games that contain playstation games. Some emulators may read that format but it is not the case for the emulator that RetroX uses. Those PBP files were created from an original playstation file, so your best option is to get the files in the origina...

For now

I have an iPega 9025 but not at home right now. Once I get it I'll check what's the problem with that controller.

Yes there will be an option for those who like EmulationStation

Not yet. I'm focused in the next release (themes) now.
After that I will be chasing several small bugs including this

The DPAD is the only standard button in a controller, that's why it is not mapped by RetroX. If your your controller is not working it is because it is not sending DPAD events, and exactly that's what the Diagnostics screen is showing. Now, alternate codes are the HAT ones, and I can see them, and t...

Nice. As you can see, your controller is not sending DPAD events. With the HAT events should be enough but for some reason it is not working. I can get one to test, but in the meanwhile try this: Pair it keeping pressed the center button + X. That should set it up in a mode with a DPAD. Run the test...

Can you try this please?

Go to Settings -> Diagnostics -> Gamepad Codes

Press the DPAD buttons in your controller and send me a shot