Concerning the books textures. I have worked out an easier way to correctly map simple textures like that. I don't use Blender. Instead, I take the original texture and import it into Sweethome3d. I size it in the editor, making note of the dimensions. Then I add a box and resize that to match the dimensions of the texture. Then I apply the texture. Then I export the box as an object. Then I can import it into Blender and place it on the bookshelf as I want it. Repeat for the other books. When all is as I like it, join all into a single object and export as object format again. Then import into the Sweethome3d Library editor. It will come in with all textures correctly oriented.
