Try this.
Hopefully someone will chime in with the exact info you need. If not you can try this over time. Ebay frequently has this unit for sale. I know because I was considering buying either this one or the DCM-5000/5001 unit at one time.
Whenever I would see it listed, the seller would typically provide a link to the website that sells the software. I've been to the site a couple of times when I would bid on it...but unfortunetely I never saved it.
But my point is what you can do is occasionally search on Ebay to see if someone is selling the unit. If they are, either they may have a link to the controlling s/w website...or at least SHOULD be able to provide it if you ask them. I know it's not an immediate solution, but it's something to try in the interim and perhaps you'll get lucky.
BTW...I just checked and there isn't one out there right now...but there was one last week because I remember seeing it.
Good luck!