Settings.ini
From XStoryPlayer Wiki
The 'settings.ini' file contains all the settings that are custom for your installed version.
Registry:
The registry is not used for settings all the settings are in this file.
Reset settings: If you have issues starting XStoryPlayer after changing settings: Simply removing the settings.ini and start XStoryPlayer. It will create a new settings.ini with default settings.
Settings menu Most settings in the settings.ini can be changed using the settings menu in XStoryPlayer.