How to extract J-Stars PS3/PS4 .Pak files

[gnbalax]

I have the ISO for the PS3 version of J-Stars and in September. I was successful in extracting the files: .CPK, but I cannot extract the files: .PAK. can you help me? With no program or attempt, I succeeded. Not even in quickbms, I'm sure I lack the right .bms. I made a few attempts on other .bms and got some numbers (I am totally inexperienced in this matter. Could you really help me?). I'm going to leave a sample of what I'm trying to unzip. It is a file that is said to be a .PAK compressed sound file. Being able to extract it here, I will receive .KPT files. Right?