Apple’s iTunes Music Store, which opened its doors in April of 2003, has just sold its 100 millionth song. To mark the milestone, Apple earlier this month launched a countdown promotion in which it said it would give away a 17-inch PowerBook, a 40GB iPod, and a gift certificate for 10,000 iTunes songs to the lucky person who downloaded the 100 millionth song. Apple will also give away iPods to those who downloaded each 100,000th song between 95 million and 100 million. Apple’s Web site says that a list of winners is “coming soon.” MacMinute reader Timothy Roberts let us know that Kevin Britten of Hays, Kansas downloaded Somersault (Dangermouse remix) by Zero7; the 100 millionth song purchased from the iTunes music store. For this he wins a 17-inch PowerBook, a 40GB iPod, and a gift certificate for 10,000 iTunes songs.