I've got to hand it to you, you find some interesting stuff. I couldn't find anything on the licensing of these two items that made me feel confident that they can be distributed via the repo.
Maybe what I can do is make a tutorial on how they can be run on Vector as there is a trick to both of them.
MX Simulator needs a dependency loaded called Electric-Fence, which is not in the repository
X-Plane needs a symbolic link created to libopenal.so.0
They both require a graphics card to run, such as Nvidia or Ati, but given that they should run well on Vectorlinux, they did on mine.
I apologize for the resurrection of an old post, but...
I own both, but have not been able to get them to run on the 64-bit system. Being 32-bit packages, I suspect that will be an issue. Any insight into that? X-plane is probably preferable; version 9 includes Linux packages.
Since we're on the subject, have you ever looked at Orbiter Spaceflight Simulator? Here:http://orbit.medphys.ucl.ac.uk/
Really freakin' cool.
Also, Flight Gear has some pre-built Slackware packages on their download page. That is a pretty good piece of software:http://www.flightgear.org/