caf files can't play on iPad

ancch

I used caf file in Apple's music library. It plays in gamesalad during development. It plays in GS Viewer. But when I compile and upload app in my iPad, the caf files do not play only the ogg plays. I had used the same caf files before in my earlier app and it worked. Wonder why it doesn't work now... is it the version of gamesalad? or is there something else? Help!