Hey,
I installed as the local user which means my user name “john” should have access to everything since Firefly is installed in my home directory. The db_param = “db_parms = /Users/john/Library/Application Support/Firefly”
That is a valid install point for Mac apps. I checked the permissions for the songs.db file and its returning that user john is the owner and group.
Like I said before though, my MP3s are stored in a different place than my iTunes library files. The library file is stored at /Users/john/Music/iTunes but my MP3s are stored on a network share located at /Volumes/FTP/MP3 Collection/. I have read/write access to both of those locations.