my audio doesnt work on an mkv file

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not really sure if im installing that stuff right, tried downloading dtsac3 source, it came up as a winzip file, i extracted the stuff inside, gave me like three items, and i dont really know what to do with the items inside. as for core aac i downloaded the setup, and when i run it, it loads all the way in like a second, maybe i got a bad download, or maybe its already installed? got it from codecs.com but they gave me like three download options, and i just clicked the top one.

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holy ********** dont know what i did, dont know what you did, but somethin you did helped me, it works now, i love you thank you soooooooooooooooooooooooooooooooooo much your the man. you truly are a bsplayer master, you have saved me HOURS of frustration. later