To use the Doomsday Engine you will need at least one of the following
original data files: Doom, Ultimate Doom, Doom II, Final Doom, Heretic,
or Hexen. A wrapper script has been provided and when run with no args,
will give you a short rundown on how to get up and running.

Additionally, if you have the audio/timidity port installed, the game
will automatically make use of it at runtime, no recompilation is
required and you will also have the associated game's music to play
along with.