Jon,
I found a long time ago, not to try to do stuff in Family Tree Maker quickly or on a batch basis. I learned to take my time and do them one at a time. Periodically, I go back and clean up my file.
I wouldn't try to mass import 200 media files. I would do them, one at a time, using the method that I just described. In fact, I am in the process of doing that now.
What I have found, a couple of times, that as my research continues, I find new places to find information, and while cleaning up an individual, I'll go back and look at the new place that I found since the last time I did research on that individual.
Russ