Actionscript 3 - Multiple variables for event listener.

Question

Ok, I have a question (of course that is the reason why I am here).  I have been focusing on PHP a lot lately and just had a client that requires an MP3 player playing multiple songs so I had to whip out my rusty actionscript skills.  I have the player completed and it is working as desired.  The down side is it has multiple songs.  I am using separate functions for each song and separate event listeners.  My main question is there a way to combine these funtions into one and just use the event listener to pass another variable to the functions?  Below is a sample of one of the code for Song1.  I would like to make it so anywhere there is Song1 in the code, I can make it a variable so I can put in for example (Song2, Song3, Song4, etc.)  This way, I can have one or two functions handle all the songs instead of having to copy, paste and then find and replace.
Thanks for the help!
// Song 1
var Song1:Sound = new Sound();
pbSong1.source = Song1;
//pbSong1.visible = false;
var Song1Loaded:Boolean = false;
pbSong1.addEventListener(Event.COMPLETE, Song1LoadComplete);
btnSong1Play.addEventListener(MouseEvent.CLICK, Song1Play);
btnSong1Stop.addEventListener(MouseEvent.CLICK, Stop);
function Song1Play(event:MouseEvent) {
     if (Song1Loaded == true) {
          sndchnlMain.stop();
          sndchnlMain = Song1.play();
     } else {
          pbSong1.visible = true;
          Song1.load(new URLRequest("media/music/Song1.mp3"));
function Song1LoadComplete(event:Event) {
     trace("Size of file: " + Song1.bytesTotal);
     Song1.close();
     Song1Loaded = true;
     if(sndchnlMain) {
          sndchnlMain.stop();
     sndchnlMain = Song1.play();
     pbSong1.visible = false;

Answer 1

But if I reset the bolean to false, if the visitor goes to replay that song, it will try to load the song again.  I did find away around having to the use the boolean value though and accomplish the same thing (I am loving this).  I am using:
this["Song"+SongNum].bytesTotal
If there are bytes, then the song is loaded OR loading.  In order to check if the song is completely loaded before it plays, I am using this:
this["Song"+SongNum].bytesTotal == this["Song"+SongNum].bytesLoaded
This elimates the need for the Boolean I was using.  Also instead of for each song defining:
pbSong1.source = Song1;
I am using the main function to do it for me:
this["pbSong"+SongNum].source = this["Song"+SongNum];
The reason why I asked about the Sound variable, I was currious if I could do the same with it as I did with the Progress Bar Source as shown above?  Instead of defining this first:
var Song1:Sound = new Sound();
Can I do this in the function:
var this["Song"+SongNum]:Sound = new Sound();
I tried it once but I got an error.
Here is the new FULL updated code:
import fl.controls.ProgressBar;
import flash.events.ProgressEvent;
import flash.events.IOErrorEvent;
import flash.net.URLRequest;
import flash.media.SoundChannel;
import flash.media.Sound;
import flash.events.MouseEvent;
import flash.events.Event;
import flash.display.MovieClip;
var sndchnlMain:SoundChannel;
ClearNowPlaying();
  Song 1 Definitions
var Song1:Sound = new Sound();
pbSong1.addEventListener(Event.COMPLETE, LoadComplete);
btnSong1Play.addEventListener(MouseEvent.CLICK, PlaySong);
btnSong1Stop.addEventListener(MouseEvent.CLICK, Stop);
  Song 2 Definitions
var Song2:Sound = new Sound();
pbSong2.addEventListener(Event.COMPLETE, LoadComplete);
btnSong2Play.addEventListener(MouseEvent.CLICK, PlaySong);
btnSong2Stop.addEventListener(MouseEvent.CLICK, Stop);
  Song 3 Definitions
var Song3:Sound = new Sound();
pbSong3.addEventListener(Event.COMPLETE, LoadComplete);
btnSong3Play.addEventListener(MouseEvent.CLICK, PlaySong);
btnSong3Stop.addEventListener(MouseEvent.CLICK, Stop);
  Song 4 Definitions
var Song4:Sound = new Sound();
pbSong4.addEventListener(Event.COMPLETE, LoadComplete);
btnSong4Play.addEventListener(MouseEvent.CLICK, PlaySong);
btnSong4Stop.addEventListener(MouseEvent.CLICK, Stop);
  Song 5 Definitions
var Song5:Sound = new Sound();
pbSong5.addEventListener(Event.COMPLETE, LoadComplete);
btnSong5Play.addEventListener(MouseEvent.CLICK, PlaySong);
btnSong5Stop.addEventListener(MouseEvent.CLICK, Stop);
  Universal Functions
function Stop(event:MouseEvent) {
     sndchnlMain.stop();
     ClearNowPlaying();
function PlaySong(event:MouseEvent) {
     var SongNum:int = Number(event.currentTarget.name.split("btnSong").join("").split("Play").join(""));
     if (this["Song"+SongNum].bytesTotal) {
          if (this["Song"+SongNum].bytesTotal == this["Song"+SongNum].bytesLoaded) {
               sndchnlMain.stop();
               ClearNowPlaying();
               this["NowPlayingSong"+SongNum].visible = true;
               sndchnlMain = this["Song"+SongNum].play();
     } else {
          this["pbSong"+SongNum].source = this["Song"+SongNum];
          this["pbSong"+SongNum].visible = true;
          this["Song"+SongNum].load(new URLRequest("media/music/Song"+SongNum+".mp3"));
function LoadComplete(event:Event) {
     var SongNum:int = Number(event.currentTarget.name.split("pbSong").join(""));
     trace("Size of file: " + this["Song"+SongNum].bytesTotal);
     this["Song"+SongNum].close();
     this["Song"+SongNum+"Loaded"] = true;
     if(sndchnlMain) {
          sndchnlMain.stop();
     ClearNowPlaying();
     this["NowPlayingSong"+SongNum].visible = true;
     sndchnlMain = this["Song"+SongNum].play();
     this["pbSong"+SongNum].visible = false;
function ClearNowPlaying() {
     NowPlayingSong1.visible = false;
     NowPlayingSong2.visible = false;
     NowPlayingSong3.visible = false;
     NowPlayingSong4.visible = false;
     NowPlayingSong5.visible = false;