in 1982, the compact disc (cd) format was released, popularizing digital audio. in 1998, the first mp3 digital audio player, the eiger labs mpman f10, was introduced. in january of that same year at the beos developer conference, n2it demonstrated finalscratch, the first digital dj system to allow djs control of mp3 files through special time-coded vinyl records or cds. while it would take some time for this novel concept to catch on with the "die-hard vinyl djs," this would become the first step in the digital dj revolution. manufacturers joined with computer djing pioneers to offer professional endorsements, the first being professor jam (a.k.a. william p. rader), who went on to develop the industry's first dedicated computer dj convention and learning program, the "cps (computerized performance system) dj summit", to help spread the word about the advantages of this emerging technology.