Boo.
I have a problem with PSX4droid (as if you couldn't read the title lol). All games run but, even though sound goes normally, there's no picture. The screen is, aside from the virtual buttons, completely black, even though the games themselves run just fine. Also, occasionally the games make screaky voices that rub my ears the wrong way...
I tried tinkering with the video options and tried four different BIOS files but nothing worked. I'm using a Samsung Galaxy S4 and right now I'm using SCPH1001 as my BIOS of choice.