Radio broadcasting involves one-way wireless transmission of audio to a wide audience. Public service broadcasting is a London-based musical duo that samples from old public information films and archive footage in their music released in 2010. The BBC is a major employer of radio producers, editors, journalists and broadcasters, with around 10,000 jobs in these areas in 2008. Digital radio rollout has been ongoing in the UK since the 1990s, with over 100 transmitters now broadcasting stations like Classic Gold, The Hits, Kiss100 and Jazz FM.