i don't understand what i'm doing wrong. i had the psx emulator working perfectly fine the other day. but somehow i screwed it up. i wanted to play ffvii while listening to music and was trying to figure out how to turn the sound off. i think i screwed with something and now it won't work. it loads the beginning credits but then there's just a black screen. i tried multiple times to download the emulator and the iso for ffvii over and over again and the result is still the same. still just a black screen after it says sony entertainment presents. i tried downloading a different bios file aside from the one that came with the psx emulator. still nothing. can anyone tell me how to fix this?