下面是一些代码：

雨燕3

import UIKit
import AVFoundation

class ViewController: UIViewController
{
    let player = AVQueuePlayer()

    @IBAction func original(sender: AnyObject) {
        if let url = Bundle.main.url(forResource: "sample_song", withExtension: "m4a") {
            player.removeAllItems()
            player.insert(AVPlayerItem(url: url), after: nil)
            player.play()
        }
    }
}

雨燕2

import UIKit
import AVFoundation

class ViewController: UIViewController
{
    let player = AVQueuePlayer()

    @IBAction func original(sender: AnyObject) {
        if let url = NSBundle.mainBundle().URLForResource("SomeAudioFile", withExtension: "m4a") {
            player.removeAllItems()
            player.insertItem(AVPlayerItem(URL: url), afterItem: nil)
            player.play()
        }
    }
}

您没有解释如果多次点击该按钮会发生什么，所以我假设您希望停止正在播放的当前项目，并开始一个新的项目。

if let url = NSBundle.mainBundle().URLForResource("SomeAudioFile", withExtension: "m4a") {
            player.removeAllItems()
            player.insertItem(AVPlayerItem(URL: url), afterItem: nil)
            player.play()
        } else {

print("Go to your Build Phases/Copy Bundle Resources to make sure that your music file IS INDEED there. If not, drag it from the Navigator pane into the Copy Bundle Resources folder.")
}

Swift 5更新：

if let url = Bundle.main.url(forResource: "SomeAudioFile", withExtension: "m4a") {
        player.removeAllItems()
        player.insert(AVPlayerItem(url: url), after: nil)
        player.play()
    }