The info for each level can be found in the wadfiles.zip.
Unzip it yourself ( as if you care who wrote it.... )

The text info goes to the following files: Repent.txt is e2m1.wad
                                           Helltrap.txt is e2m2.wad
                                           Lab.txt is e2m3.wad
                                           Hellbase.txt is e2m4.wad
                                           Cphobos.txt is e2m5-7.wad

Repent Came with Black Sunshine from White Zombie as music.
I added the following - 
                        E2m2 Don't let the Sun Go Down on Me - Elton John
                        E2m3 Modern Evil
                        E2m4 Psycho
                        E2m5 Darth Vaders Theme
                        E2m6 And She Was
                        E2m7 Carry that Weight - Beatles

I also added sounds gathered from Laura Beyer's Doom add on, and from
The doom audio Studio....I used Deu52gcc to put the EPISODE together,
DMaudio, to add sound, MIDI2MUS to alter the Midi selections, and 
Dmmusic to put them into the Pwad.