I wanted to use Tracker Modules to add music to my game, but Godot doesn't support the format, so I wrote my own tracker code, which works well enough to use... I copied the mod files over to my project folder so I can load them via the res:// path. But when I export, the files are not included in the export, as the file type is unrecognised by Godot.
How do I force it to include the files?