Почему не работает звук в Safari?

Идет такой код, для вывода сообщения включить звук или выключить:

var soundManager = SoundManager.getInstance(); // в Safari всегда undefined
if(soundManager.isSupported())
{
    soundManager.setSounds(settings.soundsInfo);
    soundManager.addEventListener(SoundManager.SOUND_LOADED, onSoundLoaded, this);
    this._soundPopUp = new PopUp("Play Sounds?", "", "Yes", "No");
    this._soundPopUp.addEventListener(PopUp.BUTTON1_CLICK, onLoadSounds, this);
    this._soundPopUp.addEventListener(PopUp.BUTTON2_CLICK, onCancelSounds, this);
    this._soundPopUp.setButtonIds("SoundPopUpYesButton", "SoundPopUpNoButton");
}
if(this._soundPopUp)
{
    this._view.addChild(this._soundPopUp);
}

Это код из библиотеки:

EventDispatcher
(
    "SoundManager", 
    {
        SOUND_LOADED: "soundLoaded",
        _instance: null,
        getInstance: function() 
        {
            SoundManager._instance || (SoundManager._instance = new SoundManager);
            return SoundManager._instance
        }
    }, 
    function() 
    {
        function c(a) 
        {
            a.target.removeEventListener(LoaderEvent.COMPLETE, c, this);
            a.target.removeEventListener(LoaderEvent.ERROR, b, this);
            var d = a.target.index;
            console.log(this._soundSources[d] + " loaded!");
            this._soundBuffers[d] = a.data;
            this.dispatchEvent(new Event(SoundManager.SOUND_LOADED, {
                soundIndex: a.target.index
            }))
        }
        function b(a) 
        {
            a.target.removeEventListener(LoaderEvent.COMPLETE, c, this);
            a.target.removeEventListener(LoaderEvent.ERROR, b, this);
            console.log("Loading " + this._soundSources[index] + " failed!")
        }
        return 
        {
            init: function() 
            {
                this._masterGain = this._context = null;
                this._soundSources = [];
                this._sounds = {};
                this._soundBuffers = [];
                this._mute = !0;
                this._super();
                window.AudioContext = window.AudioContext || window.webkitAudioContext;
                if (window.AudioContext && !this._context) 
                {
                    this._context = new AudioContext;
                    this._context.createGainNode || (this._context.createGainNode = this._context.createGain);
                    var a = this._context.createBufferSource();
                    a.noteGrainOn || a.start || this._context.createGainNode || (this._context = null)
                }
                this._context && (this._masterGain = this._context.createGainNode(), this._masterGain.connect(this._context.destination), this._masterGain.gain.value = 1)
            },
            isSupported: function() 
            {
                return this._context ? !0 : !1
            },
            getContext: function() 
            {
                return this._context
            },
            playDummySound: function(a) 
            {
                if (this._context) {
                    var b = this._context.createBufferSource();
                    b.buffer = a;
                    b.connect(this._context.destination);
                    b.noteGrainOn || (b.noteGrainOn = b.start);
                    b.noteGrainOn(0, 0, 1)
                }
            },
            setSounds: function(a) 
            {
                if (!(0 == a.length || 0 < this._soundSources.length))
                    for (var b = a.length, c = 0; c < b; c++) {
                        this._soundSources[c] = a[c].src;
                        for (var e = a[c].sounds, h = e.length, f = 0; f < h; f++) {
                            var k = e[f];
                            this._sounds[k.name] = {
                                start: k.start,
                                duration: k.duration,
                                soundIndex: c
                            }
                        }
                    }
            },
            hasSound: function(a) 
            {
                return this._sounds[a] && this._soundBuffers[this._sounds[a].soundIndex] ? !0 : !1
            },
            load: function(a) 
            {
                if (this._context &&
                    void 0 == this._soundBuffers[a]) {
                    this._soundBuffers[a] = null;
                    var d = new SoundLoader(this._soundSources[a]);
                    d.index = a;
                    d.addEventListener(LoaderEvent.COMPLETE, c, this);
                    d.addEventListener(LoaderEvent.ERROR, b, this);
                    d.load()
                }
            },
            loadAll: function() 
            {
                for (var a = this._soundSources.length, b = 0; b < a; b++) this.load(b)
            },
            areSoundsLoaded: function() 
            {
                for (var a = this._soundSources.length, b = 0; b < a; b++)
                    if (!this._soundBuffers[b]) return !1;
                return !0
            },
            getSoundLength: function(a) 
            {
                return a && this._context && this._sounds[a] && this._soundBuffers[this._sounds[a].soundIndex] ?
                    (a = this._sounds[a]) && this._soundBuffers[a.soundIndex] ? a.duration : -1 : -1
            },
            play: function(a, b, c) 
            {
                if (!(a && this._context && this._sounds[a] && this._soundBuffers[this._sounds[a].soundIndex])) return c && !b && setTimeout(function() {
                    c()
                }, 0), null;
                var e = this._sounds[a];
                console.log("Play " + a);
                a = this._context.createBufferSource();
                a.buffer = this._soundBuffers[e.soundIndex];
                a.volume = this._context.createGainNode();
                a.connect(a.volume);
                a.volume.connect(this._masterGain);
                if (c && !b) {
                    var h = setTimeout(function() {
                        c()
                    }, 1E3 * e.duration);
                    a.soundEndTimer = h
                }
                b && (a.loop = b, a.loopStart = e.start, a.loopEnd = e.start + e.duration);
                a.noteGrainOn || (a.noteGrainOn = a.start);
                b && Device.isChrome && Device.isAndroid ? a.noteGrainOn(0, e.start) : a.noteGrainOn(0, e.start, e.duration);
                return a
            },
            stop: function(a) 
            {
                if (!a) return null;
                a.soundEndTimer && clearTimeout(a.soundEndTimer);
                try {
                    a.stop(0)
                } catch (b) {}
                return null
            },
            toggleMute: function() 
            {
                this._context && (this._mute = !this._mute, this._masterGain.gain.value = this._mute ? 0 : 1)
            },
            isMuted: function() 
            {
                return this._mute
            }
        }
    }
    ()
);

Ошибок в консоли нет, но сообщения тоже нет, подскажите почему в сафари скрипт не срабатывает.

UPD Народ разобраться самому не получается, подскажите...