Well, first off, I would like to state that I have contacted a man by the name Steve Rot, who had made a "Doom Tribute", recreating all the music from Doom. After getting into contact with him, he gave me permission to use his work. And I must say, his work is pretty good. You can listen to his work on Youtube (the link to one of his songs will be on the bottom of the list.)
As for the second part of this news, if you missed it, there is a gameplay video of the mod up on this page, and Youtube as well (links will be on the bottom as well).
Well, there isn't much more to say, except, thanks for all your support and such.
Steve Rot's Doom Tribute (Interlevel Music):