Gets or sets a value that indicates whether media will begin playback automatically when the Source property is set.
<object AutoPlay="Boolean" .../>
value = object.AutoPlay
object.AutoPlay = value
true if playback is automatic; otherwise, false.
This property is read/write. The default value is true.
In script, set this property to false before setting the Source property to pause the media at load time. Call the Play method to start media playback. When opened, the media will be in Stopped state.