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 (film) Guide, describing the "Hitchhiker's Guide to the Galaxy"s entry on movie trailers. An audio collection called "Additional Guide Entries", read by Stephen Fry, was released to iTunes to promote the film. The entries were set to music by Joby Talbot, and written by Tim Browse and Sean Sollé (with the exception of the "How to be Cool" entry, which was also co-written by Yoz Grahame). The "Hitchhiker's Guide to Technology" claims that if you make yourself a cup of tea and attempt to get an object working and the tea goes cold before you finish, you are dealing with technology.