As far as the looks of Harry Potter are concerned, the characters, Hogwarts and all of the other locations from the book and movie definitely do the series justice. Characters like Harry, Ron and Hermione are amazingly close representations of the actors from the movie. Between their civilian, muggle outfits while at the World Quidditch Tournament to the gang's Hogwarts attire and Harry's Triwizard robes -- each character's clothing and style are dead on.
Like the graphics, The Goblet of Fire's sound takes on a darker feel. The game's background music is low and deep, adding a lot of mood to the game. Overall, the game's music and sound effects help to sell the game and draw you into the action.