Now I just hope that some kind person actually finds the time to fix these seams. ;^) I've never done any graphical work of my own, but I wonder, how hard is it to correct these seams? And what software is used? If it's not very hard to do, I think I could at least give it a try. :^)
You no need any third software, this must be done in CS but i think this work need an experimented landscape modder cause all can be easily distorted but isnt really hard. In any case you are welcome to try of course, i will try to find a link to a proper CS wiki to help to u do the work.