Byte array to audio in Windows Phone 8.1 XAML

I store audio records using byte array in SQLite after recording process. I use the following code to play these audio. Unfortunately, I do not get it work. Here is my code:

       StorageFolder FolderName= ApplicationData.Current.LocalFolder;
        string FileName= "File.m4a";
        CreationCollisionOption Option = CreationCollisionOption.ReplaceExisting;
        var File = await FolderName.CreateFileAsync(FileName, Option);

        using (var FS = await File.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite))
        {
            using (var OutputStream = FS.GetOutputStreamAt(0))
            {
                using (var DataWriter = new Windows.Storage.Streams.DataWriter(OutputStream))
                {
                    DataWriter.WriteBytes(AudioByteArray);
                    await DataWriter.StoreAsync();
                    DataWriter.DetachStream();
                    await OutputStream.FlushAsync();
                }              
            }        
            AudioPlayer.AutoPlay = true;              
            AudioPlayer.SetSource(FS, File.FileType);               
            AudioPlayer.Play();
        }

Please help me! Thank you!