Well that's good to know, but right now I'm on a waiting list for this:
http://www.popcornhour.com/onlinestore/
From what I've read these things are supposed to be fantastic as an easy-to-use, flexible media streamer that'll handle just about any format you throw at it. They currently sell on Ebay for double retail.
And Peter, my current media device (D-Link DSM520) seems to be able to handle most downloaded content off of a USB 2.0 stick. If you were using the USB interface on the Oppo there wouldn't be another computer in the chain, it would be the decoding computer, unless it doesn't do what I think it should.