Aria was used in the book Rhapsody by Elizabeth Haydon. It was used as a word meaning 'my star' in the Lirin language. It -might've- been selected because of its meaning, which has a lot to do with the main character of the books, who is a Singer.
Another version of this name, Arya, is a main character in George R. R. Martin's series of books, A Song of Ice and Fire. She is disobedient and wild, but she is one of my favorite characters.
-- Anonymous User 9/2/2006
There is a mousemaid in the book Martin The Warrior by Brian Jacques named Aryah. She is the mother of one of the main characters named Laterose (Rose) and Brome.
In "Eragon," by Christopher Paolini, one of the main characters, an elven princess, is named Arya, which is pronounced the same way. This may color perceptions of the name, as the two are pronounced exactly the same way.
Aria is the main name of the little girl in Rune Factory 2 (you can name her anything you want, however). Her seiyuu (Japanese voice actor) is Maeda Ai.