I am trying to following the tutorial of this website for youtube API.

http://www.zedia.net/2009/how-to-load-a-youtube-movie-into-flash-using -tubeloc/

I have downloaded the tubeloc and copied the neccessary files to my src folder and have the following codes.

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

                                 xmlns:s="library://ns.adobe.com/flex/spark"

                                 xmlns:mx="library://ns.adobe.com/flex/mx"

                                 minWidth="955" minHeight="600"

                                 xmlns:components="components.*">

          <fx:Script>

                    <![CDATA[

                              import com.enefekt.tubeloc.MovieSprite;

                              import com.enefekt.tubeloc.event.*;

                              var youtubeMovie:MovieSprite = new MovieSprite(null, true);

                              youtubeMovie.addEventListener(PlayerReadyEvent.PLAYER_ READY, onPlayerReady);  //problem code

                              addChild(youtubeMovie);     //problem code

                              function onPlayerReady(event_p:PlayerReadyEvent):void {

                                        //it's just cleaner to remove listener that won't be used again

                                        youtubeMovie.removeEventListener(PlayerReadyEvent .PLAYER_READY, onPlayerReady);

                                        //you can set the size of the movie this way

                                        youtubeMovie.width = 370;

                                        youtubeMovie.height = 276;

                                        youtubeMovie.loadVideoById("tprMEs-zfQA");

                              }

                    ]]>

          </fx:Script>

          <fx:Declarations>

                    <!-- Place non-visual elements (e.g., services, value objects) here -->

          </fx:Declarations>

       <components:videoList />

</s:Application>

However, I got the errors as following.

Access of undefined property onPlayerReady

Access of undefined property youtubeMovie

Access of undefined property youtubeMovie

Call to a possibly undefined method addChild.

I have declared those properties and I thought addChild is imported by default. How am I getting these ridiculous errors? Any thoughts? Thanks for the help.