Sorry to hop on the thread but... um... my friend who introduced me to the N800 PlayThing just sent me this and I'm not sure what the hell he's talking about:

"I put my n800 on steroids.

I built a linux server with 500GB of storage.

I installed the twonkymedia uPNP server on it ( which supports the N800
and the DSM 320, both of which I have)

I ripped all my cds to the linux server HD.

I installed the media streamer app to the N800

No I can listen to all this music or watch video on the N800, or
redirect it to the bigscreen and stereo in the living room.

I can build a playlist using the N800 as a fancy remote control for
everything.

You can do this with your Mac too."

Since my entire response, so far, will be a "yeah? Well *my* N800 has pretty backgrounds!", I was wondering if someone could tell me what the heck a twonkymedia uPNP server is and what a DSM 320 might be and if he worked the magic appls that this thread refers to.