[AS 3] Loading External Audio with Play and Stop Controls

Here is a basic class that will load in an external .mp3 file and output some text when the file has been loaded. You can toggle the audio (play and stop) by simply clicking on the movie. Please note that stopping the audio is different than pausing the music.

Here is the document class LoadSound.as

package
{
	import flash.display.Sprite;
	import flash.media.*
	import flash.net.URLRequest;
	import flash.events.IOErrorEvent;
	import flash.events.ProgressEvent;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.text.*;

	public class LoadSound extends Sprite
	{
		private var snd:Sound;
		private var sndChannel:SoundChannel;
		private var output:TextField;
		private var ct:uint;

		public function LoadSound()
		{
			showInstructions();
			init();
		}

		private function init():void
		{
			var snd:Sound = new Sound();
			snd.load(new URLRequest("/path/to/mp3/file/"));

			snd.addEventListener(IOErrorEvent.IO_ERROR, sndIOError);
			snd.addEventListener(ProgressEvent.PROGRESS, sndProgress);
			snd.addEventListener(Event.COMPLETE, sndComplete);

		}

		private function sndIOError(e:IOErrorEvent):void
		{
			output.text = "An error occured when laoding the sound";
		}

		private function sndProgress(e:ProgressEvent):void
		{
			output.text = "Loading: " + Math.round(100 * e.bytesLoaded / e.bytesTotal);
		}

		private function sndComplete(e:Event):void
		{
			output.text = "Sound loaded - click the stage to play and stop";

			stage.addEventListener(MouseEvent.MOUSE_DOWN, toggleMusic);

			var music:Sound = e.target as Sound;

			function toggleMusic():void
			{
				ct++;

				if (ct%2)
					sndChannel = music.play();
				else
					sndChannel.stop();
			}
		}

		private function showInstructions():void
		{
			// Small Black Text Formatting
			var insText:TextFormat = new TextFormat();
			insText.font = "Arial";
			insText.color = 0xffffff;
			insText.size = 12;
			insText.underline = false;  

			// output TextField
			output = new TextField();
			output.defaultTextFormat = insText;
			addChild(output);
			output.x = 10;
			output.y = 35;
			output.width = stage.stageWidth;
			output.height = 22;
		}
	}
}