Directory Listener with actions on triggering.

I have been looking at libre office and the headless mode that it provides
along with installation. I'm trying to automate a file conversion process
where a listener monitors a folder and any specific file types added to the
folder are converted into a different type. I've heard that LO may have a
listener of some sorts but looking around the documentation hasn't provided
anything yet (but I will keep looking).
Is there some sort of functionality like that in LibreOffice?

What kind of OS are you working on?
and kan you tell us more on the listener that you are currenly using?

a working example, to identify changes in a directory, written in JAVA is here:
http://docs.oracle.com/javase/tutorial/essential/io/notification.html

or you could use inotifywait or inotifywatch:
http://linux.die.net/man/1/inotifywatch
http://linux.die.net/man/1/inotifywait