The Hitchhiker's Guide to the Galaxy (novel) productions in the late 1970s. Davies himself appears as Prosser. This edition is out of print – Adams bought up many remainder copies and sold them, autographed, on his website. There have been three audiobook recordings of the novel. The first was an abridged edition (), recorded in the mid-1980s by Stephen Moore, best known for playing the voice of Marvin the Paranoid Android in the radio series, LP adaptations and in the TV series. In 1990, Adams himself recorded an unabridged edition for Dove Audiobooks (), later re-released by New Millennium Audio () in the United States and available
The Hitchhiker's Guide to the Galaxy (radio series) production on the Secondary Phase had ceased, a new radio adaptation of Adams' unadapted novel "Life, the Universe and Everything" was announced. This would become the third series of the "Hitchhiker's Guide to the Galaxy" on radio. Dirk Maggs, a friend of Adams, was chosen to create, direct and co-produce the adaptations. Maggs had previously consulted with Adams on potential radio adaptations for the final three books in 1993 and 1997. The project was restarted in September 2001 by Maggs, Helen Chattwell and Bruce Hyman, with help from Jane Belson and Ed Victor. At the time of the announcement, it