The mod has a built-in feature to help with updating translations. If you download a new update of the mod, with the Finnish translation file included, the mod will compare it against the new en_US.lang and output a copy of the Finnish file in the .mods folder with all the new translation lines included, in the correct ordering, so you don't have to search the en_US file for new translation lines to include. IMPORTANT: that copy folder is recreated every time you start the mod, so if you edit the file, make sure to copy it somewhere else!
Also, the best way to let me know of translations is to send it to the Facebook page.
Thanks for advice! My friend would like to be credited by their Minecraft name (emsknock), and I'd like to use my real name (Henrik Åkerberg). Did I understand correctly from both getting their names to the credits that you'll grant us both the Lambengolmo-shields?
And once more, thanks for an awesome and surprisingly Tolkien-accurate mod! :D