I'm trying to get the avTouch sample code app to run on the retina display. Has anyone done this?

In the CALevelMeter class, I've tried the following:

- (id)initWithCoder:(NSCoder *)coder {
 if (self = [super initWithCoder:coder]) {
      CGFloat f = self.contentScaleFactor;
      if ([self respondsToSelector:@selector(contentScaleFactor)])
      {
           self.contentScaleFactor = [[UIScreen mainScreen] scale];
      }
      f = self.contentScaleFactor;

      _showsPeaks = YES;
      _channelNumbers = [[NSArray alloc] initWithObjects:[NSNumber numberWithInt:0], nil];
      _vertical = NO;
      _useGL = YES;
      _meterTable = new MeterTable(kMinDBvalue);
      [self layoutSubLevelMeters];
      [self registerForBackgroundNotifications];
 }
 return self;

}

and it sets the contentScaleFactor to "2". Great, that was expected. But then in the layoutSubviews, CALevelMeter frame is still 1/2 of what it should be.

Any ideas?