JSWolf is right--the italics aren't coming through. When I unzipped the package, all the fonts but the main one were named in all caps. So it's probably a case-sensitivity issue. Either rename the font files to use the same cases as referenced in the stylesheet, or change the cases of the font files referenced in the stylesheet.
It's harder to tell if it's actually using the bold font or just fattening up the roman. I suspect the latter.