dfGallery configuration in detail

dfGallery is offering no support and documentation at all

so is there someone who played with it an change for example language in a preloader or remove/change data on top of dfgallery (Picture name, Date, Album)
I have decompiled swf and noticed thath language is prepared in Lang.as like:

Code:

---

final public class Lang extends CoreObject
    {
        public var value:String = null;
        public var label:String = null;
        public static const FI:Lang = new Lang("fi", "Finnish");
        public static const TR:Lang = new Lang("tr", "Turkish");
        public static const DE:Lang = new Lang("de", "German");
        public static const PL:Lang = new Lang("pl", "Polish");
        public static const FR:Lang = new Lang("fr", "French");
        public static const HU:Lang = new Lang("hu", "Hungarian");
        public static const NO:Lang = new Lang("no", "Norwegian");
        public static const PT:Lang = new Lang("pt", "Portuguese");
        public static const XU:Lang = new Lang("xu", "Other/unknown");
        public static const RU:Lang = new Lang("ru", "Russian");
        public static const SV:Lang = new Lang("sv", "Swedish");
        public static const KO:Lang = new Lang("ko", "Korean");
        public static var LANGS:HashMap = new HashMap();
        public static const EN:Lang = new Lang("en", "English");
        public static const IT:Lang = new Lang("it", "Italian");
        public static const ES:Lang = new Lang("es", "Spanish");
        public static const CS:Lang = new Lang("cs", "Czech");
        public static const ZH_CN:Lang = new Lang("zh-CN", "Simplified Chinese");
        public static const JA:Lang = new Lang("ja", "Japanese");
        public static const ZH_TW:Lang = new Lang("zh-TW", "Traditional Chinese");
        public static const DA:Lang = new Lang("da", "Danish");
        public static const NL:Lang = new Lang("nl", "Dutch");

        public function Lang(param1:String, param2:String)
        {
            this.label = param2;
            this.value = param1;
            put(this);
            return;
        }// end function
.......
...

---

..but cannot find where/how to set properties for language or remove/change data

thanks for help