iPadでMPMoviePlayerControllerを使う

iPadでムービーを再生するにはMPMoviePlayerControllerを使いますが
今までとは少し使い方が変わっています。
OS 3.2のiPadでムービーを再生する場合は、こんな感じです。

    NSBundle* bundle=[NSBundle mainBundle];
    NSString* path=[bundle pathForResource:@"DEMO" ofType:@"m4v"];
    NSURL* url=[NSURL fileURLWithPath:path];
	
    MPMoviePlayerController  *movie=[[MPMoviePlayerController alloc] initWithContentURL:url];
    movie.scalingMode=MPMovieScalingModeAspectFit;
	
	
    [[NSNotificationCenter defaultCenter] addObserver:self
		selector:@selector(movieFinishedCallback:)
		name:MPMoviePlayerPlaybackDidFinishNotification
		object:movie];
	
    [movie prepareToPlay];

    [movie play];

	
    [movie.view setFrame:CGRectMake(39, 53, 960 , 540)]; 
    movie.view.backgroundColor = [UIColor clearColor];  
    [self.view addSubview:movie.view];     

-(void)movieFinishedCallback:(NSNotification*)notification
{
    MPMoviePlayerController* movie = [notification object];
	
    [[NSNotificationCenter defaultCenter] removeObserver:self
                name:MPMoviePlayerPlaybackDidFinishNotification
                 object:movie];
	
    [movie release];
}