The Norwegian Library of Talking Books and Braille is a public library organization based in Oslo, Norway. It produces and loans out audio books and braille books. Its services are aimed at people who have difficulty reading printed texts, for example because of dylexia, visual impairment or other disabilities which making reading difficult. The library serves users across the whole country and the service is free of charge. Audiobooks are sent free by post on CD and can also be downloaded or streamed from the library's website. Users can also use the library's Lydhør app to listen to audiobooks on smartphones or tablets. The library is Norway's largest producers of audiobooks and braille books. In 2014, its collection was made up of 18000 audiobooks and 7400 braille books. The library also produces and loans out study materials for students with difficulties reading printed texts. Norwegian law permits the library to produce audio books and braille books from material subject to copyright. The library has about 29000 users.