Cheers, but actually I used that tool. it extracts the files just fine but besides the 'gui' folder, all game content folders have jpg's that don't show any image. I assume that those are still encrypted. :-/
Oh, sorry for misunderstanding!
I just tried and those files appear to be RIFF type (i.e., a container) around a WEBP file.
One option:
I find that SMPlayer - which is ostensibly a free movie file viewer (like VLC) - can handle WEBP files pretty well:
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Just drag and drop an extracted DMD ".jpg" file onto a running SMPlayer instance and you'll see the proper image.
Another option:
Install the Google WEBP codec for Windows and then you can view these files natively with Windows Photo Viewer:
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EDIT: Seems
numanumani explained this before I got back to make this reply!