No Plugins is a problem!
Firefly needs the DAAP plugin to be able to talk to iTunes.
Make sure those files are accessible to firefly.
Also, you shouldn’t always start it in foreground mode. Just use the init script.
You can see what firefly does thru the logfile or syslog just as easily.
The 0 songs served part is alright, that is actually a counter of how many songs were accessed thru firefly. So 0 is correct as of now 😉