I never used Filemaker. And I try to stay away from Windoze as far as
possible. But it seems Filemaker uses ODBC (exclusively) to access
external data sources. So you need to install the MySQL ODBC Connector
It's available for both 32- and 64-bit. But I'm not sure how the ODBC
model works. Probably your application imports a DLL from the ODBC
driver and then the driver must use same binary format as application.
As far as MySQL is concerned: it does not mind if server and client
have same number of bits or even use the same hardware platform.