Sony demo and UMD problems...

First problem, whenever i try using a sony demo on game303 folder on 303oe-c, it does not work. I tried switching regions and almost everything! Can anyone help????

Secound, whenever i try playing an UMD game, the sound does not work at all! It only works in GTA:VCS. I use Cheat Device and CWCheat if that means anything....

Ive been trying to work the demos but it hasn't worked fr 3 weeks :(....
Thanks if anyone can help!!! :D

first the demos you should put on the normal "GAME" folder silly.....
thats all i know sorry....

ohhh ok thanks ill try it when im done with pokemon sapphire.... don't make fun of me! its fun... hehe im at the elite four

ok that worked! but i couldn't get sound in either demo or in anything besides homebrew wtf?