That looks more like a helpfile or some sort for the config file.
I know that the following link contains a template of an actual config file.
http://trac.fireflymediaserver.org/browser/trunk/contrib/mt-daapd.conf.templ
You could try searching for a file that looks like that.
Also, if you can get firefly running for a minute, you can open the web interface where you can change the config on the fly.
The windows interface has a button which opens the web interface for you.