yeah I havn't played since I borrowed it from a video store for the PS2 and from memory it was fun as hell! if it's isn't available on a service like steam or another service provider I can download to my pc I might just have to give it a miss since by the time it'll arrive from amazon my crippling hit of nostalgia will most likely be over.
Sorry I know this is tad old but I have something that may be considered valid.
I cant seem to find it immediately but I remember seeing a mod for the game Arma 2 that gave you the ability to play a handful of GW races. Obviously renamed and altered enough to avoid legal issues. The Tau on there had a really interesting look and feel. Not sure if it's still around but it might suit to give those of us video gamers our Tau fix! Good hunting