As one of Vuo's developers, I work on Vuo's engine (the thing that makes compositions run), work on nodes, and write documentation. You'll see me on the forums answering people's questions about Vuo.
I've been developing apps and frameworks for several years (since I was in college). Pre-Vuo projects include Kineme Quartz Composer plugins, iOS apps for education, an app that analyzes photographs of tomato slices, and software to help people with disabilities use talking keyboards.
I enjoy using Vuo to make live music visuals. My hope for Vuo is that it will grow into a community of people of diverse backgrounds and identities making lots of different artistic, useful, unique, goofy, beautiful, crafty, wonderful compositions.
You're on the right track with using the sphere's normals (which I assume you're getting from Parabox Get Mesh Values). Since the normals are vectors (the direction that the cones should point), you have to turn them into rotations (the way the cones should be rotated to point in that direction). The attached composition shows how to do this using Make Quaternion from Vectors and Make Quaternion Transform.