Call of Duty: World at War (Wii) file extension needed

[AlphaTwentyThree]

Hi there! I've just extracted the sound data from this game and the files look like simple DSP but actually they need another extension because the header is different. Can anybody tell me the correct suffix? Here are some samples: http://www110.zippyshare.com/v/aA7hyuzK/file.html
Thanks.