I was thinking earlier today that with Blu-Ray adoption picking up and the win in the format war it seems odd that current high resolution audio formats are still constrained to older audio technology. Not to start any wars here, but SACD is basically a hack of CD using DSD to cram higher resolution audio into the same space. DVD-A basically just uses the higher capacity of DVDs to put larger higher resolution audio on in PCM. With the greater space available on Blu-Ray it would seem that since we've moved into discs with greater capacity we'd be capable of high-quality audio without the limits of the past: namely space. Anyone heard anything being considered along these lines? Have any ideas on what might or might not be happening? Or has everyone in the industry been dissatisfied with the reception of the other formats to the degree that nobodies even going to bother trying to push high def audio-only formats into the marketplace?