<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" borderColor="#010101" backgroundGradientAlphas="[1.0, 1.0]" backgroundGradientColors="[#000000, #020202]" width="150" height="150" horizontalAlign="center" verticalAlign="middle">

	<mx:Script>
	<![CDATA[
            import mx.core.SoundAsset;
            import flash.media.*;

            [Embed(source="../sounds/fart1.mp3")]
            [Bindable]
            public var fart1:Class;

            [Embed(source="../sounds/fart2.mp3")]
            [Bindable]
            public var fart2:Class;

            [Embed(source="../sounds/fart3.mp3")]
            [Bindable]
            public var fart3:Class;

            [Embed(source="../sounds/fart4.mp3")]
            [Bindable]
            public var fart4:Class;

            [Embed(source="../sounds/fart5.mp3")]
            [Bindable]
            public var fart5:Class;

            public var myFart1:SoundAsset = new fart1() as SoundAsset;
            public var myFart2:SoundAsset = new fart2() as SoundAsset;
            public var myFart3:SoundAsset = new fart3() as SoundAsset;
            public var myFart4:SoundAsset = new fart4() as SoundAsset;
            public var myFart5:SoundAsset = new fart5() as SoundAsset;
            
            public var channel:SoundChannel;
            
            //index of currently playing sound
            private var idx:int = 0;
            //max number of embedded sound files
            private var iSoundCt:int = 4;	//HACK : use zero indexing for access in fart()
            
            //sounds collection
            private var aSounds:Array = new Array( myFart1, myFart2, myFart3, myFart4, myFart5 );
            
            //temp ref to sound
            private var tmpSound:SoundAsset;
            
            //play sound
            public function fart():void 
            {
                // Make sure we don't get multiple songs playing at the same time
                stopSound();

		//get reference to sound
		tmpSound = aSounds[ idx ];

                // Play the song on the channel
                channel = tmpSound.play();

                //increment or reset index
                if( idx == iSoundCt )
                {
	               	idx = 0;
                }
                else
                {
	               	idx++;
                }
            }

            public function stopSound():void 
            {
                // Stop the channel, but only if it exists
                if ( channel != null ) channel.stop();
                
                tmpSound = null;
            }
		]]>
	</mx:Script>
	
	<mx:Image id="img_air" source="@Embed('../images/air_flex_small.jpg')" autoLoad="true" scaleContent="true" click="fart()" mouseOver="fart()" />
	
</mx:WindowedApplication>

http://www.ifartair.com

Here is the MXML source code for a simple FLEX based soundboard. You can download this Adobe AIR application at http://www.ifartair.com/

Sourcecode for ifartair.com AIR / Flex soundboard

class, Flex

MXML