I did publish it, but it didn't sell well, because our marketing sucked. I'd give you the source code if you asked for it I think. I don't think it's really worth open sourcing at this point, I doubt there's much interest in it.
I have tried open sourcing other stuff, and it's been completely overlooked. I guess you have to promote it somehow. But I've tried putting stuff on GitHub, and I don't think anyone ever looked at it. If it were to have an audience I'd do it.