I also uploaded an update for psx4m-gui.

Changelog:
* Added icons for game (put a file named as the iso file + ".png" in the same directory)
* Removed psx4m save_name argument
* Added PCSX4all gpu option for pcsx-rearmed

Screenshot:


Icons should be 144x80 (it's the same size of the icons used on the psp for psx converted games).
You can find icons easily using google and searching for exact size.