that's perhaps the most recent snapshot before the site was no longer available. I know this was a a collaborative effort between Andreas Errson and Roy Queenan...I've not received any updates for Drumuar since 2006, but I just looked up Roy and he's show still active on twitter... you may want to ping him there? good luck! Drumular is seriously underrated kit.
I've been trying for several months to find a piece of software to let the Tänzbar home and finally I've found the pair of drum modules giving that extra punch i need... Holy cow. Is there a way to buy a license?