In the late 90's and early 2000's my graphic editor of choice was PaintShop Pro v7 on Windoze. Now in 2014, while running Linux, all those .psp files are practically unusable.
I finally I found a de facto way to convert them. No searching the GIMP or Corel forums anymore. Problem solved!
Download/extract XnSoft's NConvert and try something like this in your folder of choice:
find ./ -name "*.psp" -execdir ~/path/to/nconvert -o $%.png -out png {} \;
Pwned.
To break this down, we are "find"ing all .psp files recursively, then "exec"uting (with full path) the nconvert command with output of path+filename+.png and format png. The found files are represented with {}. The \; is simply to end the exec command.
Good Luck!
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