Wow, nice home made DSP and amplifier! Looks like a lovely setup, thanks for sharing.

I have a comparatively low end setup at home, but one which works so well I really don't see any need to upgrade. It is an old Acer Revo R3700 'Net Top' computer with an Atom D525 1.8GHz and nVidia ION 2 chipset/graphics. Cheap, quiet, and with VDPAU hardware decoder acceleration enabled for the ION 2 in Linux and XBMC, it really does play everything up to 1080p H.264 over the network without dropping a single frame (and minimal CPU usage to boot). The box itself has HDMI and SPDIF audio out too.

Would definitely recommend it. Although I have a little Logitech DiNovo Mini Keyboard/Mouse, I also have this USB HDMI-CEC Adapter so I can pretty much control everything with my TV remote, which is very convenient.