View source is enabled [...]]]> The following example shows how you can mute the volume on a Spark VideoPlayer control in Flex 4by setting the Boolean muted property.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.
For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/05/05/muting-the-volume-on-a-spark-videoplayer-control-in-flex-gumbo/ -->
<s:Application name="Spark_VideoPlayer_muted_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">

    <s:CheckBox id="checkBox"
            label="muted"
            left="10"
            top="10" />

    <s:VideoPlayer id="videoPlayer"
            source="http://helpexamples.com/flash/video/cuepoints.flv"
            muted="{checkBox.selected}"
            horizontalCenter="0"
            verticalCenter="0" />

</s:Application>

View source is enabled in the following example.

You can also set the muted property using ActionScript, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/05/05/muting-the-volume-on-a-spark-videoplayer-control-in-flex-gumbo/ -->
<s:Application name="Spark_VideoPlayer_muted_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">

    <s:CheckBox id="checkBox"
            label="muted"
            left="10"
            top="10"
            click="videoPlayer.muted = checkBox.selected;" />

    <s:VideoPlayer id="videoPlayer"
            source="http://helpexamples.com/flash/video/cuepoints.flv"
            horizontalCenter="0"
            verticalCenter="0" />

</s:Application>

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.