Well, I read the tutorial on PSPCrazy on how to use SonicStage to put .at3 files onto the PSP and I followed just about every step listed but it just wouldn't work. Is there a specific location in the root folder the OMGaudio folder has to be? I also remember reading somewhere that you need 2.0 firmware to play them or some kind of USB mem. stick reader/writer? Anyone care to help with this?