This mod plays the music file with the path music/hddead.mp3. Just change that file if you want different music.
Death message titles are loaded from filenames that start with deathmessages.
All titles are seperated by a newline.
Death subtitles are loaded from filenames that start with deathsubtitles.
All subtitles are seperated by a newline.
It should be noted that you can use colour codes specified in the ZDoom Print wiki page.