This isn’t really open-source, but it’s a great freeware program…CDBurner XP Pro, which contrary to its name also burns DVDs. It’s great for a free DVD burner, as none really exist.

The only system requirements that I can find are that your system has a DVD or CD burner, and possibly that it runs Windows XP–I can’t find anything on OS requirements, and I don’t run 98 or 2000 Pro anymore, but it does include “XP” in its name…so be forewarned. Does NOT work with Linux or Mac!

http://www.cdburnerxp.se/