CTX DVD is one of the cornerstones of my Cathe collection (and I only buy Cathe DVD's). The only "premixes" on it are the Upper Body Split (which pulls all of the upper body resistance segments together) and the All Abs "premix", which plays all of the ab segments one after the other. It does not have a workout blender feature - that is a more recent innovation.
I love love love CTX. The workouts are not quite as finely chaptered as in later releases but it is good enough for me. My personal faves are the Power Circuit circuit segment and ab segment, the 10-10-10 hi/lo segment, the Step Intervals interval segment, the All Step and Leaner Legs ab segments (traditional ab work at its best), and my mostest favoritest Kickbox core and ab segment.
A-Jock