Sounds don't play on iPhone

Good morning, I developed a simple soundboard as an .ipa app with AIR for iOS, but the sounds don't work. I mean, when I open the app I can see the buttons to push to play the relative sound, but when I push a button the sound doesn't play.

Here is my AS:

import flash.text.TextField;

//Array for buttons instances.

var buttonsArray:Array = new Array();

buttonsArray[0] = a01;

buttonsArray[1] = a02;

buttonsArray[2] = a03;

//Array for the sound clip names.

var soundArray:Array = new Array();

soundArray[0] = 'media/a01.mp3';

soundArray[1] = 'media/a02.mp3';

soundArray[2] = 'media/a03.mp3';

//This adds the mouse click event to the buttons.

for(var i:uint = 0; i < buttonsArray.length; i++){

buttonsArray.addEventListener(MouseEvent.CLICK, buttonClicked);

}

astop.addEventListener(MouseEvent.CLICK, stopButtonClicked);

//This function stops any sound clip that is playing and

//plays the sound file thats clicked.

function buttonClicked(e:MouseEvent):void{

SoundMixer.stopAll();

for(var i:uint = 0; i < buttonsArray.length; i++){

  if(e.target == buttonsArray){

   var s:Sound = new Sound();

   s.load(new URLRequest(soundArray));

   s.play();

  }

}

}

//This function adds a keyboard down event to the stage

//to stop a sound when the space bar is pressed.

function stopButtonClicked(e:MouseEvent):void{

SoundMixer.stopAll();

}

The same thing happens when I export this file as an .exe.

What am I missing?