Sets the `GtkMediaFile to play the given resource.
This is a utility function that converts the given @resource_path to a GFile and calls [method@Gtk.MediaFile.set_file].
path to resource to play
See Implementation
Sets the `GtkMediaFile to play the given resource.
This is a utility function that converts the given @resource_path to a GFile and calls [method@Gtk.MediaFile.set_file].