NTS: SMP8635

There seems to be plenty of software out there to build a firmware - there's various places to look, but I think there's a complete picture between them:

http://b-rad.cc/wdlxtv/
http://support.wdc.com/product/download.asp?groupid=1001&sid=112&lang=en
http://www.networkedmediatank.com/download/firmware/nmt/gpl/gpl.htm
http://wiki.opentvix.com/Sigma_Tools
http://www.wdtvc.com/downloads/
http://download.opentvix.com/

I've asked MagicTV NZ (aka HookTech), and they're in contact with Hong Kong, and hopefully trying to get the code from PixelMagic. It would be nice if there were media player abilities on this box:
... but I'm worried I'll brick the box in the process (and fall out of favour in the process!).