Really handy way to work with MPVolumeView since it doesn't have an IB component. Just create a UIView, and call this from -viewDidLoad, it will make sure to center and swap in a volume view.

MPVolumeView+ReferenceView.h

#import <MediaPlayer/MediaPlayer.h>

@interface MPVolumeView (ReferenceView)
+ (MPVolumeView *)swapWithReferenceView:(UIView *)referenceView;
@end

MPVolumeView+ReferenceView.m

#import "MPVolumeView+ReferenceView.h"

@implementation MPVolumeView (ReferenceView)

+ (MPVolumeView *)swapWithReferenceView:(UIView *)referenceView
{
    MPVolumeView * volumeView = [[MPVolumeView alloc] initWithFrame:referenceView.frame];
    [volumeView sizeToFit];
    [volumeView setCenter:referenceView.center];
    [volumeView setAutoresizingMask:referenceView.autoresizingMask];
    [referenceView.superview addSubview:volumeView];
    [referenceView removeFromSuperview];
    
    return [volumeView autorelease];
}

@end