[WarAxe]

Yeah... after digging through xda I found two apps -- cfcgui and manila editor -- both of which will edit existing manila files so you can put in your own images, etc. BUT, they are desktop apps... and won't do what I want to do... which is allow someone to choose a wallpaper on their phone and have it automatically do all that crazy 3-file-512-square creation/cropping whatever. That way people can just find suitable 1536x512 image files and throw them on their device to use as pano wallpaper whenever they want... rather than have to do the kabuki dance or whatever.