There are a couple of techniques that are about to become more mainstream now that FileMaker Go is out. Server-Side scripting is one of them and Agi Riley of ZeroBlue has written a nice overview of how this works. We have server-side scripts in SeedCode Complete to do email notifications, and once you start modifying these scripts you’ll find a ton of other uses for them.

Using the Salesforce API in Claris FileMaker
SeedCode’s Ann Kiser recently spoke to the Claris Beyond user group about her experiences running projects in Salesforce and how to use the Salesforce API