Look at the bottom of this page...
http://www.subsonic.org/pages/getting-started.jspI don't have Mac so i can't tell you where the configuraiton file is stored.
Supposedly, if Mac's truely are Unix based you should be able to find the file using this in the commandline interface.
find / -type f -iname "subsonic"You also might be able to find the basic directories that SS stores it's configuration files with this one.
find / -type d -iname "*subsonic*"