Hi All 
I finished my program to merge the old german translation with other translation, adding missing strings to the german file. So what you get is a 90 percent translated file, some text is still english.
Heres the link: (Rightclick and "Save target to ...")
German.str.105 (100% translated, original german translation)
German.str.1.1b2 (90% translated, merged from English.str 1.1b2 and german translation above)
Install: Copy file your sins - installation folder under "Strings". Make a backup from "English.str". Rename the corresponding file to "English.str" and play the game 
If someone is interessted to play with german sounds - i´ve created a downloadable archive wich includes all sounds of sins, all you gonna do is replace the packed "Sounds" folder with your original sounds folder. Please pm me if you like 
Greetz,
Ray