I saw this tutorial on Blender Nation that deal with creating Minecraft animations in Blender. After following several links, I finally came up with the file and downloaded it.
I could edit the images that were used to texture the models. However, when I wanted to disable anti-aliasing/sampling, I discovered that the textures are not linked to their objects in the usual way (i.e., through the Textures tab in the Properties panel). In fact, I have not been able to find any link between the textures and the objects that they adorn.
What is going on here? Am I just missing something blindingly obvious?