As far as I'm aware, the only tool that can generate a sprite sheet image is my own SpriteSheetGen from the SonLVL tool set. There's also a related SpritePlotter.NET program for converting a sprite sheet into art+mappings. SonMapEd does not allow direct editing of graphics, Flex 2 does however. I'm not sure what .bin files you're talking about. If you mean tiles, you can just use the command prompt like "copy /b file1.bin+file2.bin newfile.bin" assuming the files are uncompressed.