Mini MP3 Player Preview

Creating a Mini Music Player in AS3

If you are still scratching your head trying to grasp the concept and structure of Actionscript 3, then this tutorial will help you get your feet wet. This Flash tutorial is great for users looking to begin using sound with Actionscript 3.0. It touches on the basics of sound integration.

In an attempt to improve a tutorial where the topic of creating a simple MP3 player providing a starting point most while getting your feet wet with AS3.  I’ve decided to mature this post by putting a little more thought and effort into creating a more feature rich player.

Introducing the Mini MP3 Player

Based on your feedback, I implemented many of the features that had been request over the last year.  However, the usage of the player is still meant for simple music playback and control.   The feature list goes as follows:


  • Easily load a new sound at runtime using the load() method
  • Autoplay your loaded sounds
  • Enabled looping of your loaded sounds
  • Rewind and fast forward your loaded sounds using the built-in rewind/fast forward simulator
  • Control the volume with the integrated volume scrubber
  • Slick UI designed by Ryan Butz that can easily be customized
  • External access to sound navigation functionality like playing, stopping, rewinding, forwarding, etc.

[button style=”download” link=”” color=”silver”]Download[/button]


Mini MP3 Player Preview

How to implement the Mini MP3 Player?

Once you’ve dragged out an instance of the Mini MP3 Player onto the Flash stage, give it a relevant instance name.  Trigger open your Actions pane and paste the snippet below which highlights controlling it’s initial properties.  To get you off the ground quicker, I’ve created a quick start Flash file giving you everything you need to experiment with this mini MP3 player.

Note: This simple music player was built to handle any one mp3 at a time.

This music player can easily be added to a personal site, blog, and even a MySpace page. Use this to get you started, then see where that will take you. Enjoy!


As you integrate this into your projects, I’d love to hear our feedback.  However, like always, let’s keep it constructive.


The provided audio loop is a part of the Teru’s Keys Loop freebie pack.  Like it?  Download the whole pack.

19 thoughts on “Creating a Mini Music Player in AS3

  1. Hallo! Thanks. I am working on a new as3 flash site for myself and have a simple question.
    In the flash cs3 manual I read:”Once load() is called on a Sound object, you can’t later load a different sound file into that Sound object. To load a different sound file, create a new Sound object.”
    I hate that! I simpy want to the user to click different buttons which trigger different mp3 (streams). Triggering a new sound should kill the one playing. I used to accomplish this by simply loading a new sound into a created sound object. Please help!

  2. I am very found of collecting variety of Music because i want every person in this world listen there music where they want.

  3. Thanks for the great tutorial, I was struggling with this in AS3, it seems every time I finally get the hang of action script, they change the version on me…oh well, what can you do I guess


  4. Hi all, cool script, but just IMHO, about the line 4. In this string “var music:Sound = new Sound(new URLRequest(“walk.mp3″));” better use absolute path instead relative: for example, URLRequest(“”) instead URLRequest(“walk.mp3”).

  5. You should call removeEventLisener when drop:

    function dropIt(e:Event):void
    if (dragging)
    dragging = false;
    volume_mc.slider_mc.removeEventListener(Event.ENTER_FRAME, adjustVolume);


  6. Great tutorial. I’m getting two “1120:Access of undefined property sc.” errors though. First one for

    if (sc != null)

    And the second one for

    sc.soundTransform = st;

    Here is my code:


    var soundReq:URLRequest = new URLRequest(“kennypowersaudiobook.mp3”);
    var sound:Sound = new Sound();
    var soundControl:SoundChannel = new SoundChannel();
    var isPlaying:Boolean = false;
    var resumeTime:Number = 0;

    sound.addEventListener(Event.COMPLETE, onComplete);

    function onComplete(event:Event):void {
    play_btn.addEventListener(MouseEvent.CLICK, playSound);
    stop_btn.addEventListener(MouseEvent.CLICK, stopSound);
    back_btn.addEventListener(MouseEvent.CLICK, goBack);

    function playSound(event:MouseEvent):void {
    soundControl =;
    pause_btn.visible = true;
    pause_btn.addEventListener(MouseEvent.CLICK, pauseSound);
    play_btn.visible = false;
    pause_btn.removeEventListener(MouseEvent.CLICK, playSound);

    function pauseSound(event:MouseEvent):void {
    resumeTime = soundControl.position;
    play_btn.visible = true;

    function stopSound(event:MouseEvent):void {

    function goBack(e:MouseEvent):void {

    var dragging:Boolean = false;
    var rectangle:Rectangle = new Rectangle(0,0,100,0);
    volume_mc.slider_mc.addEventListener(MouseEvent.MOUSE_DOWN, dragIt);
    stage.addEventListener(MouseEvent.MOUSE_UP, dropIt);

    function dragIt(e:Event):void {
    dragging = true;
    volume_mc.slider_mc.addEventListener(Event.ENTER_FRAME, adjustVolume);

    function dropIt(e:Event):void {
    if (dragging) {
    dragging = false;

    function adjustVolume(e:Event):void {
    var vol:Number = volume_mc.slider_mc.x / 100;
    var st:SoundTransform = new SoundTransform(vol);
    if (sc != null) {
    sc.soundTransform = st;

    Any information would be greatly appreciated.

  7. Koki,

    you add something like that. I dont tested it:

    sound.addEventListener(NetStatusEvent.NET_STATUS, handlerFunction);

    private function handlerFunction(event:NetStatusEvent):void{

    Test and try it.

  8. It mostly works…trying to get music to play in the browser itself and it's not working, thought it works fine in flash player. IDK.

  9. Hi, Just to say this is a fantastic post – I am very much a beginner in flash and I found it very clear and simple to follow. And most importantly it works for me.
    Any chance you could add another tutorial or let me know what the code would be to add a fast forward and a rewind button?

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