Swift and XCode 7 beta 2 are not displaying the metadata of the songs playing

I'm doing a test program dealing with audio and tableView, right now I have the controller working and playing the chosen song correctly, but I'm trying to display the metadata from the mp3 file and is not doing anything currently I have it like this:

Function to print the data:

func testAudioStuff(testURL testURL: NSURL) { 
let audioInfo = AVPlayerItem(URL: testURL)
let metaDataList = audioInfo.asset.metadata as [AVMetadataItem]
for item in metaDataList { 
if item.commonKey == nil { continue }
if let key = item.commonKey, let value = item.value {
 print(key) 
print(value as! String) 
if key == "title" { 
print(key)
 print("here is the title" + (value as! String)) 
} 
if key == "artist" {
 print(key) 
print("here is the artist" + (value as! String)) 
}
 if key == "artwork" { 
print("here is the artwork" + (value as! String))
 }
 }
 }
 }

Function to play the music:

func playSelectedMusic(song: Int, section: Int) { 
if section == 1 {
if let starMusic = productsAndMusic["Music"] {
let play = starMusic[song].componentsSeparatedByString(".")[0]
if let fileToPlay = NSBundle.mainBundle().pathForResource(play, ofType: "mp3") {
 / testAudioStuff(testURL: NSURL(string: fileToPlay)!) 
do {
player = try AVAudioPlayer(contentsOfURL: NSURL(string: fileToPlay)!) 
} catch Errors.GeneralError { }
 catch let error as NSError { p
rint("i dunno this does not comes with instructions \(error)")
 } catch let something as ErrorType { 
print("somehting else \(something)")
 } 
player.prepareToPlay() 
player.play() 
}  
} 
 } else {
 }
 }

As I mentioned it plays the selected song in the simulator but it does not print the metadata, why?, any help? Is in Xcode 7 beta 2.