I was wondering if someone might be able to help me with opening Black Ops .pak files. I'm trying to extract the sound files and, from what I understand, sound files are located in the .pak files. I have tried numerous programs like WinRar, Pakscape, and DragonUnpacker but I believe the files might be encrypted. Is there a way to open these files?

Also, I'm not sure if this matters but they are Xbox 360 .pak files.