Also if you don't want to use Twonky and a computer you can pick up a Netgear WNDR3700 and stick your USD HD right into it. It has its own server software and its pretty simple to set up. If you have AIFF files you may get some issues with album art but not the case with FLAC. The forums over on the PS Audio website are pretty active and very helpful with this stuff. I'm currently using this solution until something better comes along. I'm very very happy with the PWD/Bridge combo. Best digital I've had. DAC obsessing is over(for now, LOL). All the best.
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