Please disregard the previous comments about the Dutch pronunciation of Ariane, since both comments are incorrect.The proper Dutch pronunciation of Ariane is: ah-ree-AH-nə. [noted -ed]
The first commenter (-- Anonymous User 4/13/2007) was right about the pronunciation, at least that's how King Willem-Alexander has pronounced his daughters name on tv multiple times. So that's how the Dutch Royal family pronounces it. I personally (as a native Dutch person) would pronounce Ariane as Lucille said, like ah-ree-AH-nə. This sounds more feminine to me.