Me and a friend from me have create a German Translation for the M.I.R.V Mod.
Is this ok for you?
I can upload the Translation for you for the integrate in the Mod
I give myself a lot of effort and am grateful for the help I get from a friend
sry my english is not so good

If you provide it to me, I can include it in the next version of the mod

Is the string file in the locale folder the only file containing the voice data?

Yes, the mirv.cfg

https://www.dropbox.com/s/brflerxw8hketan/M.I.R.V%20German%20Translation.rar?dl=1

This is the Link
IS this ok?