Currently it appears I need to put the sauce username and api key in two places. First in the hudson config so the ssh tunneling works, and then second ~/.sauce-ondemand so the Sauce OnDemand driver for SeleniumFactory knows what it is.

It seems better if the hudson config could pick it up automatically from ~/.sauce-ondemand, or if was passed through to the hudson project with environment variables. Perhaps one of these things already works, but I didn't see it in the documentation.