Okay, I have combined the appearance and texture guis from the other threads (see urls at the bottom) into a single application.
You can now see how textures and appearance properties work together. To use the texture editor go to the textures tab and click the texture editor button. Another window will open. Load in images and select one you wish to make a texture out of. Click the Generate Texture button. Once the texture is generated it's name will be added to the texture list in the Appearance editor. At that point you can select it to use in the appearance object. Changes to textures in the texture editor are updated in real time to the appearance editor.
Note that in order to get two views to render at that same time I had to modify com.xith3d.render.jogl.CanvasPeerImpl.