Swift - Audio doubles when reloading the viewcontroller

I'm developing a wrapper to stream icecast radio. This is some of my code:

This loads the URL for the Radio

var radio = Radio(userAgent: "my App")
var playing = true
var link = "http://ift.tt/1zJKb3z"

This is the playbutton:

// MARK: RadioPlayPause
    @IBAction func toggleRadio(sender: UIButton) {
        if (playing)
        {
            playing = false
            radio.updatePlay(false)
            sender.setImage(UIImage(named: "play"), forState: UIControlState.Normal)

        }
        else
        {
            playing = true
            radio.updatePlay(true)
            sender.setImage(UIImage(named: "pause"), forState: UIControlState.Normal)
            AVAudioSession.sharedInstance().setActive(true, error: nil)
        }
    }

And here in the viewDidLoad is that connects to the radio:

// RadioLader
        radio.connect(link, withDelegate: self, withGain: 1.0)

And here some of the code that loads the title and the interpret What i get is for example this:

'Fox Stevenson - Sweets (Soda Pop)';

so i had to play this arround so it shows me interpret: Fox Stevenson, Title: Sweets. If you have any tips for doing this easyier i'd be very pleased because i'm new to swift.

func metaTitleUpdated(title: String) {

        var length = countElements(title)

        if length < 17 {
            println("kein Titel")
            interpretLabel.text = " "
            titleLabel.text = "Spot/Nachrichten"
        }
        else {
        var StreamTitle = split(title) {$0 == "="}
        var titelinterpret: String = StreamTitle[1]
        var titelinterpretgetrennt = split(titelinterpret) {$0 == "-"}

        var titel: String = titelinterpretgetrennt[1]
        titel = dropLast(titel)
        titel = dropFirst(titel)

        titel1 = titel
        titel1 = dropLast(titel1)

        interpret = titelinterpretgetrennt[0]
        interpret = dropFirst(interpret)

        titleLabel.text = titel1
        interpretLabel.text = interpret
        println("\(titelinterpret) wird gerate gespielt")
        println("\(titel1) ist der Song")
        println("\(interpret) ist der Interpret")

        // Sendet Info an NowPlayingInfoCenter
        let playingInfo = [MPMediaItemPropertyAlbumArtist: interpret, MPMediaItemPropertyAlbumTitle: titel1]
        MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = playingInfo
        }
    }

I know that the radio.connect in the viewdidload is causing that problem. I can put the radio.connect also into the playbutton and remove it from the viewdidload:

@IBAction func toggleRadio(sender: UIButton) {
        if (playing)
        {
            playing = false
            radio.updatePlay(false)
            sender.setImage(UIImage(named: "play"), forState: UIControlState.Normal)

        }
        else
        {
            radio.connect(link, withDelegate: self, withGain: 1.0)
            playing = true
            radio.updatePlay(true)
            sender.setImage(UIImage(named: "pause"), forState: UIControlState.Normal)
            AVAudioSession.sharedInstance().setActive(true, error: nil)
        }
    }

With this option the music doesn't start playing again when reloading the view. But the problem is, that the song name and interpret doesn't reload anymore.

Thank you :)