retunelars

I'm also having issues with tfio.audio.AudioIOTensor that I don't see when using tf.audio.decode_wav. However, I managed to make tfio.audio.AudioIOTensor work when disabling parallel processing, so it may be a problem...

I'm seeing similar issues when using `num_parallel_calls > 1`, which makes it impossible to use in an input pipeline. Maybe there is something in the underlying implementation that is not...