There are many others that can do this conversion GJ...DVDFlick, AVStoDVD, FAVC to name a few.
The question is, does kmmd want to watch these videos as avi files or dvd-video? Open the files with MediaInfo and check to see what codecs are used in them kmmd.
Do you have a dvd player that can play back avi files? If so, you might not have to convert them. Many newer players can handle divx or xvid avi files that are simply burned to a disk as data.
If you can't get all to fit onto a single disk, you might consider burning to a dual layer dvd.