shadertone does not play audio or video textures

[rogerallen]

Bringing this issue over from the original repo: rogerallen#12

Shadertone does not decode audio or video "textures" like the www.shadertoy.com website.

This is something that would be nice to have, but since the main use case I'm focused on is Overtone, I'm satisfied to only take that as the only audio input for now.

For movies, a quick search for code seemed to describe a "bag of hurt" to decode video textures. I'd rather focus on other features first.

So, for now I'll list the issue and place this in the "wontfix" category.

I will certainly consider pull requests or pointers to code that would help add this easily.