Just ahead of the planned early April launch of Harry Potter author J.K. Rowling’s full Pottermore site for all things Hogwarts, e-book and audio book versions of all seven Harry Potter books were made available today on the site. This is the first time the Potter books are available in digital formats. So far only the US and UK versions of the phenomenally successful book series are being offered. French, Italian, German and Spanish editions are due soon. Priced at $7.99-$9.99 for e-books, $29.99-$44.99 for audio editions, the digital editions are only available through the Pottermore site. They are compatible with Apple’s iPad/iPod line, Amazon’s Kindle, Google’s Play, Barnes & Noble’s Nook, Sony’s Reader and other major e-readers. Although the multi-billion-dollar Harry Potter film franchise was produced and distributed by Warner Bros., the e-book store on Pottermore is a collaboration with Sony. The full but long-delayed Pottermore site will feature an online Potter encyclopedia, social networking opportunities, games and an even more robust online store.