ISTR One of the ex-Rio germany guys, Martin Moerz, made an Xscale-powered linux running, DMX lighting system a few years after the Rio Central (he does freelance design for people). I remember thinking it looked pretty cool - think it had two Xscales actually, one to do the hard real-time stuff.

If you're interested pm me and I'll send you his email addr.... he could point you at who sold it in the end I'm sure.

Hugo