Doom (1993 video game)
Because id planned to self-publish the game, as the game neared completion they had to set up the systems to sell the game. Jay Wilbur, who had been brought on as CEO and sole member of the business team, planned the marketing and distribution of "Doom". He felt that the mainstream press was uninterested in the game, and as id would make the most money off of copies they sold directly to customers—up to 85 percent of the planned US$40 price—he decided to leverage the shareware market as much as possible, buying only a single ad in any gaming magazine. Instead, he reached out directly to software retailers, offering them copies of the first "Doom" episode for free, allowing them to charge any price for it, in order to spur customer interest in buying the full game directly from id.
Doom (1993 video game)
Like they had for "Wolfenstein 3D", id hired Bobby Prince to create the music and sound effects. Romero directed Prince to make the music in techno and metal styles; many of the songs were directly inspired by songs from popular metal bands such as Alice in Chains and Pantera. Prince himself felt that more ambient music would work better for the game and produced numerous tracks in both styles in the hopes of convincing the team; Romero, however, still liked the metal tracks and put both styles in the game. Prince did not make music for specific levels, as they were composed before the levels were completed; instead, Romero assigned each track to each level late in development. Unlike the music, the sound effects for the enemies and weapons were created by Prince for specific purposes; Prince designed them based on short descriptions or concept art of a monster or weapon, and then adjusted the sound effects to match the completed animations. The sound effects for the monsters were created from animal noises, and Prince designed all the sound effects to be distinct on the limited sound hardware of the time, even when many sound effects were playing at once.