Help needed to load different xml playlists by clicking button

Question

Hi there,
I have a series of buttons, when i double click a button i want to load a new xml file
I have some functioning code, but when i click on more than one button per run of the application, it will only use the first xml that was clicked / loaded.
Does anyone have any suggestions I would be really grateful
Thanks!
// Music player populated via XML formatted data with associated .mp3 audio files
// songs to play structured as an XMLList class
// displays artist and song title in the interface
cover.visible = false;
cover2.visible = false;
// song list base on an XMLList class
var songList:XMLList;
// total number of songs in list
var songsTotal:Number;
// sound class variable
var sound:Sound;
// sound channnel variable to play, pause and stop the sound
var soundChannel:SoundChannel;
// holds a reference to the current song playing
var currentSong:Number = 0;
// variable to store the song position when paused
var songPosition:Number;
// flag to check if current song is paused
var songPaused:Boolean;
//  loader for XML via a URL
var XMLLoader:URLLoader = new URLLoader();
// various buttons to control songs via the interface
next_btn.addEventListener(MouseEvent.CLICK, onNext);
prev_btn.addEventListener(MouseEvent.CLICK, onPrev);
pause_btn.addEventListener(MouseEvent.CLICK, onPause);
play_btn.addEventListener(MouseEvent.CLICK, onPlay);
album1.doubleClickEnabled=true;
album2.doubleClickEnabled=true;
album1.addEventListener(MouseEvent.DOUBLE_CLICK, loadalbum1);
album2.addEventListener(MouseEvent.DOUBLE_CLICK, loadalbum2);
// check the data has loaded correctly
XMLLoader.addEventListener(Event.COMPLETE, processXML);
// this function processes the XML data
function processXML(e:Event):void {
// create an XML playlist structure
var anXMLplayList:XML = new XML(e.target.data);
// associate the playlist songs with the internal song list
songList = anXMLplayList.SONG;
// set the total songs to those found in the XML data
songsTotal = songList.length();
// remove the eventlistener and restore variables
XMLLoader.removeEventListener(Event.COMPLETE, processXML);
XMLLoader = null;
// this function starts the first song in the list
// when the play_btn is pressed via the onPlay function
function playSong(aSong:Number):void {
// variables for the Title, Artist and associated song in the song list
var aTitle = songList[aSong].@TITLE;
var anArtist = songList[aSong].@ARTIST;
var aURL = songList[aSong].@URL;
// populate the interface with the current song data
title_txt.text = aTitle;
artist_txt.text = anArtist;
// check to see if the sound channel is active
if (soundChannel) {
  soundChannel.stop();
  soundChannel.removeEventListener(Event.SOUND_COMPLETE, onNext);
// create a new sound object
sound = new Sound();
// load the sound from the URL song data
sound.load(new URLRequest(aURL));
// activate the sound channel via the play method
soundChannel = sound.play();
// when the current songh completes - play the next song via the onNext function
soundChannel.addEventListener(Event.SOUND_COMPLETE, onNext);
// this function plays the next song in the list
function onNext(e:Event):void {
// increment the current song
currentSong++;
// reset the current song if no more to play
if (currentSong>=songsTotal) {
  currentSong=0;
// else play the current song via the playSong method
playSong(currentSong);
// this function plays the previous song in the song list
function onPrev(e:MouseEvent):void {
currentSong--;
if (currentSong<0) {
  currentSong = songsTotal-1;
playSong(currentSong);
// this function pauses the current song playing and sets the boolean flag
// accordingly
function onPause(e:MouseEvent):void {
if (soundChannel) {
  songPosition = soundChannel.position;
  soundChannel.stop();
  songPaused=true;
// this function plays the current song or restarts a paused song
function onPlay(e:MouseEvent):void {
if (songPaused) {
  soundChannel = sound.play(songPosition);
  songPaused=false;
} else if (!soundChannel) {
  playSong(currentSong);
function loadalbum1(e:Event):void {
cover.visible = true;
cover2.visible = false;
// load the XML formated playlist
XMLLoader.load(new URLRequest("playlist1.xml"));
function loadalbum2(e:Event):void {
cover2.visible = true;
cover.visible = false;
// load the XML formated playlist
XMLLoader.load(new URLRequest("playlist2.xml"));

Answer 1

You should try to limit the code you post to what is relevant to the problem... it is hard to track things down, especially when your code is not formatted properly with indentations.
I didn't search farther than finding that you remove the event listener for the URLLoader...
XMLLoader.removeEventListener(Event.COMPLETE, processXML);
so if you remove it after you load the first file and do not restore one for it, then chances are you don't "processXML" any more than the first file you load