For now the hapless program is the only one that can handle the GR-HD1's unique bitstream.

FORBES: Magazine Article

So just because your player will output every codec via bitstream, doesn't mean your receiver can decode them.

ENGADGET: How to actually use Dolby TrueHD and DTS-HD HD

If you have the latest AV receiver with HDMI 1.3, you can set your player to send the compressed signal (aka bitstream) to it and let it do the heavy work.

ENGADGET: How to actually use Dolby TrueHD and DTS-HD HD