Skaction.playsoundfilenamed crashes when repeat -

Question

I have a problem with sprite kit SKAction.playSoundFileNamed. In practice, after some time it is played correctly , the app crashes saying it will not load . The file is included in the bundle import the project file exists and everything is properly set.

The only problem , after some time I play, I will crash saying it can not find the file , or at least can not be loaded .

My question is , is there a way to recharge every time the sound SKAction.playSoundFileNamed ?

EDIT - SOLVED

//init
var sound = SKAction.playSoundFileNamed("sound.mp3", waitForCompletion: false)
var sound2 = SKAction.playSoundFileNamed("sound2.mp3", waitForCompletion: false) 

//in the code call function when play sound:
playSound(sound)

...

func playSound(soundVariable : SKAction)
{
    runAction(soundVariable)   
}

The preload sounds instantiated no longer generates crash

Answer 1

I have this little helper class of type SKNode for playing Audio files. NOTE: Helper object must be added to SKScene hierarchy for audios to be played.

import UIKit

enum SFX_TYPE:Int
{
    case NEW_LEVEL = 0
    case BANG = 1
}

let SFXContainer:[SFX_TYPE:[SKAction]] = [
    SFX_TYPE.NEW_LEVEL : [SKAction.playSoundFileNamed("newlevel.m4a", waitForCompletion: true)],
    SFX_TYPE.BANG : [
        SKAction.playSoundFileNamed("explosion1.m4a", waitForCompletion: true),
        SKAction.playSoundFileNamed("explosion2.m4a", waitForCompletion: true),
        SKAction.playSoundFileNamed("explosion3.m4a", waitForCompletion: true),
        SKAction.playSoundFileNamed("explosion4.m4a", waitForCompletion: true)
    ]
]

class SabilandSound: SKNode {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    deinit
    {
        Helper.masterObserverRemove(self)
    }

    override init()
    {
        super.init()
        NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("masterPlaySFX:"), name: NCNPlaySFX, object: nil)
    }

    func masterPlaySFX(n:NSNotification)
    {
        let st = SFX_TYPE(rawValue: n.userInfo![NCNPlaySFX] as! Int)!
        let c = SFXContainer[st]!
        let a = SFXContainer[st]![Helper.randomBetween(0, max: c.count, includeMax: false)]
        runAction(a)
    }

}

Answer 2

prelound sound variable

//init
var sound = SKAction.playSoundFileNamed("sound.mp3", waitForCompletion: false)
var sound2 = SKAction.playSoundFileNamed("sound2.mp3", waitForCompletion: false) 

//in the code call function when play sound:
playSound(sound)

...

func playSound(soundVariable : SKAction)
{
    runAction(soundVariable)   
}