Nothing that I know of exists already.
However, you can roll-your-own integration based on what factset seems to offer:
IE, you could use Filemaker's Insert From URL to get snapshot data from a defined URL. It mentions XML, CSV and HTML, all of which are supported formats for loading data into Filemaker.
It also says it supports Java, which means you could write conduits using 360works free ScriptMaster plugin, which processes Java code from Filemaker.
Thanks Mike. This is above my level. If needed, would you be interested in pitching in?
I'll shoot you a message with our contact info.