To the best of my knowledge, Nathanel Titane is using a developer build of LDView to export to 3DS format. Unfortunately, the latest release (including the 4.2 beta release) of LDView has significant bugs in its 3DS exporter, preventing it from being usable. I keep meaning to get an official 4.2 release out, but unfortunately I just haven't spent time working on it for the last few years, and it keeps not happening.
I assume someone using the LDraw Blender importer could import an LDraw model into Blender, and then from there export it into a format that you support.
I assume someone using the LDraw Blender importer could import an LDraw model into Blender, and then from there export it into a format that you support.