I think people are taking trueaudio wrong (and its being marketed poorly, but this is partly because it will be more important for later generation cards rather than current gen). It can help positional audio in accuracy (which that demo shows poorly), but realisticly what it does is offload the audio stress from the CPU to enable better quality or more audio streams.
In a couple years it should become more important, but for the time being its just fancy audio polish.
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