Here is a big map of FKKs and others, and you will see a number of Munich links there.
https://maps.google.com/maps/ms?msid=210980961214256580520.00045d515d0f87adf527e&msa=0&dg=featureI can't speak to the recency of the info there though. Best to follow up with the club specific links.
Also it's worth noting that in Bavaria uncovered oral sex is not legal at brothels. So it may be hard to find.
You can also go to my map linked below. It will show you where 2 clusters of Eros Centers are. Those are more like the red light district experience, except instead of window girls visible from outside, you go into a large building where there are long halls lined with small rooms, each with a girl inside.