VIDEO: Playing audio and video files requires Microsoft Silverlight. To download, go to http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx. Make sure the status of Microsoft Silverlight is enabled in Internet Explorer’s Add-ons Manager.
1 Click Tools | Manage Add-ons.
2 Select All add-ons.
3 Select Enabled for Microsoft Silverlight in the Add-on list.