# Making a Mp3 Player
**URL:** https://forum.kirupa.com/t/making-a-mp3-player/38367
**Category:** flash
**Created:** [December 21, 2003, 11:28pm UTC](https://forum.kirupa.com/t/making-a-mp3-player/38367 "2003-12-21T23:28:49Z")
**Posts on this page:** 13
**Page:** 1
Hey guys i am making this music player for a site i am making and i want know how can i make does bars that move randomly up and down when the music is playing
any tut. or an example… thanks.
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well i can help you with the player part if you need it: [http://www.kirupaforum.com/forums/showthread.php?s=&threadid=40757&highlight=dynamic+mp3+player](http://www.kirupaforum.com/forums/showthread.php?s=&threadid=40757&highlight=dynamic+mp3+player)
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If you want real equalizer bars, you need a program that can analyze the song and bring that info into Flash, such as SwiftMP3 for example. Otherwise, you can just tween some bars, or use actionscript to randomly size them.
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no no,… just random bar… not the hard one ::pope:
yeap i want to make it with actionscript because i want to add some easing but i dont know how :-\ any help or tutorial
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Easing ? Golden formula:
property = target-(target-property)/1.2
or 1.3, or 1.4, … depends on how fast you want it to ease. Example prototype for easing:
```auto
MovieClip.prototype.ease = function(x,y){
this.onEnterFrame = function(){
this._x = x-(x-this._x)/1.2
this._y = y-(y-this._y)/1.2
if(this._x < x+1 && this._x > x-1){
delete this.onEnterFrame
//this is the point where the target x,y has been reached
}
}
}
```
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yes you told me that i could make the equalizer by just adding some motion tweens (to the bars )
could i make each bar into movie clips and and the ease code so they have that effect ?
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Yes, you could do that. You’d have to change the y value to ease to all the time, but I think motion tweens will make the movement seem more natural here.
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