Need help ripping from a certain PSP games
 

Hello.I downloaded the iso of Makai Senki Disgaea Portable PSP.I used dragon unpacker and was able to rip out the sound files.However all of them including the .it one is just sound effects,no actual music.

I also tried it with PSound and get the same result.

I tried every single file included in the iso and those were the only sound files located...Is it the file itself or maybe I have to use another method?

Thank you for your time.