Do you have a ".mdf" file too?
One time I had access to a hard drive with both a .mds and .mdf file for a particular movie.
It turned out that these were DVD-type files from the pc-wintel
application called 120% Alcohol (DVD-ripper, I guess).
The .mds seemed similar to an svcd's cue file, e.g., some kind of small text "description file",
while the .mdf was the actual video file -- huge at 4.37 gigabytes.
A Mac running OSX can use the freeware video player, "vlc" (available at versiontracker) to play the .mdf file.
Quicktime couldn't recognize the .mdf file.
As far as using a Mac to burn the .mdf file,
I have no idea.