void ghb_grey_combo_options(GtkBuilder *builder);
void ghb_update_ui_combo_box(
signal_user_data_t *ud, const gchar *name, gint user_data, gboolean all);
+gchar* ghb_get_source_audio_lang(gint titleindex, gint track);
gint ghb_find_audio_track(
gint titleindex, const gchar *lang, gint acodec, GHashTable *track_indices);
void ghb_add_all_subtitles(signal_user_data_t *ud, gint titleindex);