Addon request: Advanced Language Selector

[lnfinity]

As the title already hints, I am looking for a way to play the game in two languages. While I think that english is simply the language a mmo is supposed to be played in, I would like to have a tool that allows me to have my text in english but voices in german so that I don't miss some of the lore.
There are probably a lot of others who would like this feature, too.