Hi !
Are you tired of playing with a character who shouts like a sea lion ?
Here is a little guide that will allow you to change the original voices of the game in the Japanese and Korean languages ! I'm using it, and it's working perfectly with this version of the game.
First, download the .7z pack at this address - https://xan105.github.io/Aion-Japanese-Voice-Pack/
Then extract it directly into the folder * :
EuroAion \ L10N \ [*** YOUR LANGUAGE CODE ***] \ sounds
You may use 7zip to extract the archive.
And There you go with subarashi voices on your kawaii gamu desu ka !
* Note that it is better to make a backup of the original sounds (place where you can find it easily if it goes wrong)
In case you really make a mistake, you will have to use the 'check files' button of the EuroAion launcher to fix your errors.
T.