length = file->tag.get_property("LENGTH", (int64_t)0);
hard_left = file->tag.get_property("HARD_LEFT", (int64_t)0);
hard_right = file->tag.get_property("HARD_RIGHT", (int64_t)0);
length = file->tag.get_property("LENGTH", (int64_t)0);
hard_left = file->tag.get_property("HARD_LEFT", (int64_t)0);
hard_right = file->tag.get_property("HARD_RIGHT", (int64_t)0);
group_id = file->tag.get_property("GROUP_ID", group_id);
user_title[0] = 0;
file->tag.get_property("USER_TITLE", user_title);
group_id = file->tag.get_property("GROUP_ID", group_id);
user_title[0] = 0;
file->tag.get_property("USER_TITLE", user_title);