I have Vue 7 xStream. Do I also need Vue 7 Infinite?
No. Vue 7 xStream includes all the tools available in Vue 7 Infinite. When running in standalone mode, Vue 7 xStream behaves exactly like Vue 7 Infinite. The only difference between xStream and Infinite is that, on top of the standalone mode, xStream also lets you integrate your environments inside other 3D applications, whereas Infinite only operates as a standalone application.