How to use MediaPlayer

gistfile1.txt

import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.scene.paint.Color;
import javafx.scene.Scene;
import javafx.stage.Stage;

function run(args: String[]) {
    var media = Media {
        source: args[0]
    };

    var player = MediaPlayer {
        media: media
        autoPlay: true
    };

    var stage:Stage = Stage {
        title: "Media Player";
        visible: true;
        scene: Scene {
            width:  640
            height: 320
            fill: Color.BLACK
            content: [
                MediaView {
                    fitWidth:  bind stage.scene.width
                    mediaPlayer: player
                    onMouseClicked: function(e) {
                        if (player.paused) {
                            player.play();
                        } else {
                            player.pause();
                        }
                    }
                }
            ]
        }
    }
}