Ziz said:

Why don't you guys just do the German audio as an MP3 that people can listen to on their iPod/MP3 player while they watch the film? That would get it out there easier and faster for those that need it without having to have another version of the film/disc floating around out there.

Maybe because the quality would be crap from such an MP3 (MPEG artefacts are disgusting in general), or maybe because syncing the MP3 player to the footage would be very tricky, or maybe because people want to put a disc in their DVD player and have it Just Work(TM).