<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/06/30/playing-a-sound-effect-when-a-progressbar-control-completes-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            import mx.events.SliderEvent;

            private function slider_change(evt:SliderEvent):void {
                progressBar.setProgress(evt.value, slider.maximum);
            }
        ]]>
    </mx:Script>

    <mx:SoundEffect id="ding"
            source="@Embed('ding.mp3')" /> 

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="percentComplete:">
                <mx:HSlider id="slider"
                        minimum="0"
                        maximum="100"
                        value="0"
                        snapInterval="1"
                        tickInterval="10"
                        liveDragging="true"
                        showTrackHighlight="true"
                        change="slider_change(event);" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:ProgressBar id="progressBar"
            mode="manual"
            completeEffect="{ding}" />

</mx:Application>