Thank you for your post.
FileMaker does not have the ability to integrate with Address Book. However, if you go to our web site and search for "plug-in Address Book", I see at least one developer/company that has created a plug-in. Please look through the found set of records on our web site for more information.
To suggest this for a future release of FileMaker Pro, please fill in the form at:
Normally, I would copy and paste this information into the form, but there are additional questions asked that only you can answer.