As speculated earlier today, Apple did in fact manage to sell their 10 billionth iTunes download. This represents a huge milestone for both Apple and the music industry. Apple has revolutionized the music industry with the iPod and iTunes. It seems like only yesterday that Apple sold the 500 millionth song to much fanfare. It's pretty clear that this whole digital music thing has really caught on. Here's to another 10 billion Apple, from your fans at TUAW.