Well, you don't have to be a professional to translate... You just need to have to find someone who isn't English, but fluent enough in English, and he could translate everything. Voice acting would then be easy, as there would be no need for every actor to translate. Having the community work on this could be an easy way to do it, as there are people from all around the world.
It's actually quite common to find people with fluent English as a second language (and capable of translating from English to their language) with English being so important today and all that... Though it usually depends on the country.
I know by personal experience that French people usually can't speak English worth crap, but fear not, I can do the job just fine
And it won't be too long to do. We're not translating a novel or anything, just a handful of spoken sentences of maybe ten words each at most, plus some in-game menus, the game isn't cut-scenerific so there aren't any extensive dialogs.