I figured out how to add subtitles to DVDs, but I don't trust translation websites to actually translate things correctly, so if anyone is interested in checking translations for SPANISH, FRENCH, and ITALIAN, message me. You'll be credited in the film, and you can get a free copy of it for your work.
baalseraph:
I can't help with spanish, french or italian, but if you need help with german translation I would gladly try to help you out.