Game Hunter:
I've taken most of your comments into consideration and applied a few fixes to address some of the more problematic issues that, i have to admit, didn't really occur to me until i was told about them.
Please note that this specific tune is intended for the title screen, and as such does not strictly need a strong and pronounced percussion. A potential special level theme, on the other hand, would. In addition, the title music in DoomRL does not currently loop, though it could change with time. Nevertheless, i removed the pause in the wave file and played with the envelope a bit to make the transition a little smoother, but it won't work for the midi.
Proponents of alternative audio formats:
The mp3 version was produced by running the midi file through Timidity++ with a wave file as the output and Fluid as the soundfont, then compressing the wave. By this i am implying that anyone with a similar (or better!) setup could produce the track in any desired format and that, in my opinion, the sound quality of the source file is not high enough to warrant worrying about quality loss during conversion.
Despite the above, i made the requested files. Make of it what you may.