My wild guess: Whoever put together this tune for use in ads, youtube, etc, ripped it off from shapeshifter, knowing full well whoever wrote the tune for the game probably wants to forget that portion of his life working on one of the final handful of games of a failing system, therefore will never bother to take action against anyone using it. In fact, he might be happy more than 1000 people are actually hearing the music if he ever finds out. So the rip off artist knows this, liked the tune and used it for his generic ad music.
Again, wild guess......