#!/usr/bin/swift

import Cocoa
import AVFoundation

var error: NSError?

println("Hello,Audio!")
var url = NSURL(fileURLWithPath: "/Users/somebody/myfile.mid") // Change to a local midi file
var midi = AVMIDIPlayer(contentsOfURL: url,soundBankURL: nil,error: &error)
if midi == nil {
    if let e = error {
        println("AVMIDIPlayer Failed: " + e.localizedDescription)
    }
}
midi.play(nil)
while midi.playing {
    // Spin (yeah,that's bad!)
}

如果我们在终端中运行这个快速脚本,它工作正常并播放midi文件,但是如果你在游乐场中运行代码,你会得到

AVMIDIPlayer Failed: The operation couldn’t be completed. (com.apple.coreaudio.avfaudio error -1.)

从积极的方面来说,能够在终端中运行它表明代码确实有效.