I'm not sure if you're trolling or not, but this is ARM so it can't run Win7, it has surround sound through the HDMI port, and you could probably add a USB bluray drive and use the h.264 decoding in the GPU to make that work.

What about doing terminal services (either LTSP or RDS)? Easier to manage, plus I'd be worried about the write workload of a full desktop OS on the SD card.

http://wanem.sourceforge.net/ is a great tool for this. We use it at work to test thin clients over simulated WAN links. It has a ton of options (latency, jitter, packet loss, bandwidth, etc).