function SoundController() {
        var hasSound = false;


        function callMP3PlayerMethod(methodName, args) {
            var result = null;
            try {
                if (app.mp3playerIsInit) {
                    if (!args) {
                        args = [];
                    }

                    result = mp3player[methodName].apply(mp3player, args);
                }

            }
            catch (e) {

                try {
                    GA("Radio", "SWFError", e.message + "[" + methodName, "; " + util.cloneArray(args).join(",") + "]");

                }
                catch (e) {
                    GA("Radio", "SWFError", "CallMethod:" + methodName);
                }

            }
            return result;
        }


        this._play = function (url, posAsMillis) {
            hasSound = true;
            callMP3PlayerMethod("playMusic", [url, posAsMillis]);
        };


        this.closeMusicStream = function () {
            if(hasSound){
                clearInterval(updateInterval);
                callMP3PlayerMethod("closeMusicStream");
                hasSound = false;
            }

        };

        this.setVolume = function (vol) {
            if(hasSound) {
                callMP3PlayerMethod("setMusicVolume", [vol / 100]);
            }
        };


        var updateInterval;

        this.playSoundEffect = function (url, volume) {
            callMP3PlayerMethod("setSoundEffectVolume",[volume/100]);
            callMP3PlayerMethod("playSoundEffect",[url]);
        };

        this.playSound = function (opts) {
            clearInterval(updateInterval);
            var onError = function () {
                hasSound = false;
                clearInterval(updateInterval);
                if (opts.onError) {
                    opts.onError();
                }
            };

            var onComplete = function () {
                hasSound = false;
                clearInterval(updateInterval);

                if (opts.onComplete) {
                    opts.onComplete();
                }
            };

            window.onMP3PlayerErrorListener = onError;
            window.onMP3PlayerCompleteListener = onComplete;

            var volume = util.isDef(opts.volume) ? opts.volume : 100;

            var position = opts.position || 0;

            this._play(opts.url, position);
            this.setVolume(volume);

            if (opts.onUpdate) {
                updateInterval = setInterval(function () {
                    var info = callMP3PlayerMethod("getMusicInfo");
                    if (info) {
                        opts.onUpdate(info.position);
                    }
                }, 1000);
                opts.onUpdate(position);
            }
        }

    }