IOError  - AS3

package {
    import flash.display.Sprite;
    import flash.errors.IOError;
    import flash.media.Sound;
      
    public class IOErrorExample extends Sprite
    {
        public function IOErrorExample()
        {
            var music:Sound = new Sound();
            try {
                  music.close();
                  trace("Stream closed.");
            } catch (error:IOError) {
                  trace("The stream could not be closed, or the stream was not open.");
            }
        }
    }
}