public async Task Init()
        {
            var testFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///TestContent/test_signal.mp3"));

            var stream = await testFile.OpenAsync(FileAccessMode.Read);

            sut = new AudioSourceReader(stream);
        }
 public void Cleanup()
 {
     sut.Dispose();
     sut = null;
 }