actually the game was always bundled on GOG with Jedi Knight.
but no matter, it's a great stand alone DLC in any case. Sadly like in JK they still use a bad video codec. Other than in JK they pre rendered the cut scenes in the ingame engine. Why they didn't just use real time rending, is beyond me, that would have looked better.
Another downer is that they only use low res sounds. JK offered an option to choose between two sample rates, in MotS they only offer the low quality one. Using the ingame engine for cut scenes would also have helped with that storage limitation.
The game is one of the first - if not THE first - 3D shooter to use colored lighting, the lightsabers cast lightsources in the according color and so do the projectiles. When that technology was introduced for the game, a update with the same enhancements for Jedi Knight would have been cool.
It was a good continuation of what Jedi Knight started, but would be worthy of a better presentation (cut scenes and sound quality)