I've uploaded the tiles monks provided to my website,
here. They're greyscale BMPs, but they're still 24 bit at present due to the way his World Machine exported them or something. First thing I do as I open each 5000x5000 bmp is turn it into a true 8 bit greyscale. When I've gotten them all converted I'll re-upload the much smaller files. Right now, zipped they're ~170 MB.
Just remember that if you use them, you need to give credit to the
ME-DEV ME-DEM project and/or monks/Redrobes. Their "official" website is
here. Correct me if I'm wrong, monks!
EDIT: ME-DEM project, sorry. At least I got the link right. Heh.
Anyway, nice screenshots man. Can you tell me what shader you're using? I've got OptiFine installed and SEUS's shaders. I'm using an admittedly older GeForce 9800 GTX+, but still...I can't run anything more than SEUS Lite. It sucks! Any advice would be GREATLY appreciated.
Take care.
EDIT: What kind of rig are you using? I've only got an 8 GB Dual Core Pentium. Takes a long time to work with one tile. Heh. Are you able to work on the entire 50,000x45,000 map in World Painter? Or do you have to work on chunks of it?