Amazon.com, which has been rapidly adding digital downloads on his site department store, said Thursday they had agreed to buy Audible, the largest online sales of audio books.

Amazon will pay $ 300 million in cash for the company, on the one hand, or $ 11.50, premium of 23% over the closing price of the action on Wednesday.

Audible, which is based in Newark, 80000 offers audio books and speech, the products of magazines, radio and newspapers, entertainment, including The New York Times. It distributes its digital files through their own Web sites, and since 2003, more than Apple’s iTunes service popular.

The transaction will emerge Audible products Amazon offers digital media, it has the exclusive right in the last 16 months. Customers can now download movies, television and music of the Amazon instead of a CD or DVD in the mail.