The workout blender allows you to reorder the workout. So for example in Step Blast if you wanted to do the combos in a different order you could select combo #3, then combo #1, then combo #2, then the cooldown.
You do not need a programmable DVD as the DVD is asking you to make a choice. So when you select the workout blender option, it comes up and says something like "select 1st segment" (can't remember the exact wording). Then you make your choice, then it comes up and says "select 2nd segment", you make next choice, etc. then you select start.
Hope that makes sense. I used that option last night and it was very cool - also my DVD player I use for my workouts is not programmable.:7