Random bit of useful information over there from Peter:
And, as long as I'm pestering a Rio employee, how is the ethernet support going to work?

You plug it in. If there's a DHCP server, it DHCPs, otherwise it autonets (UPnP-styley). Then it announces itself over SSDP multicast. If you're using Windows XP Home (or anything else that talks SSDP -- it's a completely open standard) an icon pops up in Network Neighbourhood. If you're using other sorts of Windows, an icon pops up in our own transfer software. Otherwise, you just point a web browser at it: there's a web server in it which will serve you a completely cross-platform Java applet to do your transfers.

I don't know whether we'll be actively helping the open-source community to implement the Ethernet protocol this time, but it certainly wouldn't be rocket science to reverse-engineer it.

Peter