hi, are you sure its geodata for whole germany? I also tried searching but didnt find anything x_X
actually it is possible to change it into mapthis format, we would just need to know the way it has to be and write a program, which should change it to be readable by the mapviewer.
I think deniska offered help with that.
It would be nice if you could send me the link to the files via pm, cause im also interested in german geodata