Check out Dilligaf's website (http://dilligaf.d2g.com/audrey/indexwhite.shtml)
I believe he partially answers your question there if you scroll down to the section labelled "Shared Calendar and Addressbook".
He's even got some scripts that will let you copy the Audrey files to a shared drive on a networked computer.
It looks like the files you want are DatebookDB.gdbm and AddressDB.gdbm, stored in /data/hotsync/__kojak\$name
where $name is the name of the person whose data they are ("main" if there's only one).
You'll need to figure out how to convert this data to Sony Clie format, if that's what you want to synch.
Another option is to do as Robert did (http://www.canoma.com/audrey/calendar.html) and use Yahoo's calendar/addressbook and just use they Audrey to access it. Then you can use Intellisync (http://calendar.yahoo.com/?v=120&pv=61) to keep your PDA & Yahoo calendar synchronized.
Hope this helps,