OK, paint still shows 96 DPI. Almost all other covers downloaded show up correctly in paint.
Cover shows up the correct 3366 x 2100, but wants to print out in too big because even after the 4th download, paint insists it 96 DPI.
But no worries, after resizing 32% it prints out fine from paint too.

But your right Photoshop CS3 says it is 300 PPI ( peepee eye

)
And I have only had problems with less than 10 covers before, when printing from paint.