The Doom64 EX Website now offers version 2.0 of this recreation of the N64 edition of DOOM. Word is: "There’s [sic] too many updates, changes and improvements to list here since version 1.4 though some of the biggest changes were the complete overhaul of the audio system, console, and interface. Many things were also tweaked and changed to match the exact behavior of the original game such as player movement, some enemy behavior tweaks, etc." Thanks Ant via Doomworld.