Xml song timer - disappearing

1

ok so I’m about ready to rip out my hair here! some1 helppppppp! My timer disappears on me.

Here is the code:

stop();
playlist = new XML();
playlist.ignoreWhite = true;

playlist.onLoad = function(success) {
    if (success) {
        _global.songname = [];
        _global.songfile = [];
        for (var i = 0; i<playlist.firstChild.childNodes.length; i++) {
            _global.songname* = playlist.firstChild.childNodes*.attributes.name;
            _global.songfile* = playlist.firstChild.childNodes*.attributes.file;
            // trace(songname*+"  "+songfile*+");
        }
    }
    _root.createEmptyMovieClip("sound_mc", 1);
    _global.song_nr = random(songfile.length);
    _root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};

function timer(sound_obj) {
    time = sound_obj.position/1000;
    min = Math.floor(time/60);
    min = (min<10) ? "0"+min : min;
    sec = Math.floor(time%60);
    sec = (sec<10) ? "0"+sec : sec;
    timeDisplay_txt.text = min+":"+sec;
}

MovieClip.prototype.songStarter = function(file, name) {
    if (this.sound_obj) {
        this.sound_obj.stop();
        delete this.sound_obj;
    }
    this.sound_obj = new Sound(this);
    this.sound_obj.loadSound(file, true);
    this.onEnterFrame = function() {
        if (this.sound_obj.position>0) {
            delete this.onEnterFrame;
            this._parent.display_txt.text = name;
            timeInterval = setInterval(timer, 1000, this.sound_obj);
        } else {
            this._parent.display_txt.text = "loading...";
        }
    };
    this.sound_obj.onSoundComplete = function() {
        clearInterval(timeInterval);
        this._parent.timeDisplay_txt.text = "00:00";
        (song_nr == songfile.length-1) ? _global.song_nr=0 : _global.song_nr++;
        _root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
    };
    this._parent.volume1.dragger.onPress = function() {
        startDrag(this, true, 0, this._y, this._parent.volBG._width, this._y);
        this.onEnterFrame = function() {
            var p = (this._x/this._parent.volBG._width)*100;
            this._parent._parent.sound_mc.sound_obj.setVolume(p);
        };
    };
    this._parent.volume1.dragger.onRelease = function() {
        delete this.onEnterFrame;
        stopDrag();
    };
    this._parent.volume1.dragger.onReleaseOutside = function() {
        stopDrag();
    };
};


btn_play.onRelease = function() {
    clearInterval(timeInterval);
    this._parent.timeDisplay_txt.text = "00:00";
    this._parent.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
btn_stop.onRelease = function() {
    clearInterval(timeInterval);
    this._parent.timeDisplay_txt.text = "00:00";
    this._parent.sound_mc.sound_obj.stop();
};
btn_fw.onRelease = function() {
    clearInterval(timeInterval);
    this._parent.timeDisplay_txt.text = "00:00";
    (song_nr == songfile.length-1) ? _global.song_nr=0 : _global.song_nr++;
    _root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};
btn_rev.onRelease = function() {
    clearInterval(timeInterval);
    this._parent.timeDisplay_txt.text = "00:00";
    (song_nr == 0) ? _global.song_nr=songfile.length-1 : _global.song_nr--;
    _root.sound_mc.songStarter(songfile[song_nr], songname[song_nr]);
};


playlist.load("playlist.xml");