You could, of course, contact E-on to be sure since I'm just guessing about what your options are. As far as XStream goes, the folllowing is from E-on's site...

Quote - The Vue xStream suite of plug-ins for Max, Maya, LightWave or Cinema 4D* enables CG professionals to totally integrate their 3D projects into Vue environments. Thanks to Vue xStream, Vue 5 Infinite environments will become a seamless part of the Max, Maya, LightWave or Cinema 4D scenery.

In one single render pass, Max, Maya, LightWave or Cinema 4D elements will be rendered together with Vue elements, accurately matching shadows, reflections and illumination to deliver totally blended CG footage without requiring any additional effort.

However...

If you don't have any of these high-end programs then it's fairly pointless to get it. :lol: