Voices and Quotes from Other Regions

This might have been asked somewhere else on the forum, but I feel like it would be good to bring it up again. In the latest PBE post, some of the voices for Japanese champion voiceovers were shown, and frankly sounded pretty damn awesome! Is there any way we might be able to use these sounds in the NA client (i.e. not having to move our account over?) If not, is there any way we could go into the files and replace the sounds? They just sound so damn cool, I thought it would be worth a try. If anyone has any information on how to do this, or has something to say about this, or just wants to support this if it isn't a thing (yet hopefully!) then please leave a comment! Thanks guys, and have Teemo New Year!