Changing the ingame Sound files to japanese

I have been trying to figure out how to get the sounds of the pbe Server (japanese) into the normal live client and enjoy them ingame. I got a little Tutorial which was a bit foggy since it isn't all clear and after i did like it was written to me it just didn't play any ingame champ voice nor the announcer voice. so maybe someone form the community board knows how to do that with success and not with negative results. Thanks for reading all this if you did and please drop an anwser to this if you know anything about it. Thanks{{champion:17}} .
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