Complex sentence: When "Preemptive Strike" was first released, it included a bonus track on a second disc, which featured DJ Q-Bert in a megamix titled "Camel Bobsled Race (DJ Shadow Megamix)".
Split into simpler sentences: When "Preemptive Strike" was first released, it included a bonus track on a second disk. It featured DJ Q-Bert in a megamix entitled, "Camel Bobsled Race (DJ Shadow Megamix)".