So, kinda surprised this one isnt in there.
Whenver you create a material, the shader for ambient, diffuse, emissive and specular can be set through visual logic.
If you add a layer of image or video on top, you can in the material editor assign an image URL or a video URL. That's all fine. Below it you can even add a datalinq for THAT material to use.
Now, I would very much like to be able to change the URL of the source image/video through visual logic as well. It's not a MAJOR thing, and I can definetly work around it in DashBoard, as that is my main source into DataLinq, but being able to set the URL of the image/video through visual logic would've been great.
And, yes, I've check... it's not in the list of things to change under the video shader in Visual Logic, as of version 8.5 at least.