This has been really driving me nuts. I can't get my MP3's to work with GT psp. I completed the driving challenges required to play custom music in the game. I've tried to put the MP3's into the "GTPSP" folder, That didn't work. I've tried changing the Bit-Rate and Sample-Rate's to what is said in the manual and I still haven't gotten the game to recognize them. They work in the XMB so I know they work and the firmware is up to date... I don't know if I'm missing something or if this is a common issue. If anyone can help It would be greatly appreciated.