I think he is talking about the characters when viewed as text, but it isnt text, the "Italian". This is normal when you try to view a non-text file, it shwows you the hex instead.
Try a hex viewer on solution.png, like HxD, at the end, "Do you understand me? Nobody does. The truth is deeper inside. - 467767 - Listen again. - 467767 - Listen again. - 467767 - Listen again. - 467767 - Listen again. - 467767 - Listen again. - 467767 - Listen again."
Also, new game, unforgettable. I found this in unforgettable, "http://imgur.com/a/v4W75".
Someone else, Pix Player said, "Morse code for "unforgettable" photo : theanswerlayshere.
He also mentioned the morse code in solution.png which others have found