The location of the both files is operating system dependent as described below:
In Windows Explorer go to C:\Users\username\AppData\Roaming\SongKong (where username is your Windows username)
Double click on songkong.properties file, to Edit
From Finder, hold down Option Button and select Go menu
Select Library from the list
Go to Preferences
Double click on songkong.properties file, to Edit
CD $HOME/.songkong
vi songkong.preferences to edit