Well, after scrounging around the bowels of the internet looking for information on abandoned Mac file formats of a time forgotten, I took it upon myself to see if I could generate modern-style MIDI files for all the original Marathon 1 songs in-game. As many of us know, the songs were originally in a variant of MIDI, encoded in one handy data file for Marathon to read. And, as we also know, almost nothing can read these files. Except..
Marathon Music Exploder, a program for Classic Macs. With the help of Basilisk II, a 68K Mac emulator, I ran MMC on the original release of Marathon. Lo and behold, out popped 16 different files. Now, these files had no extension, so I was about to abandon ship, because when I tried to add the .mid extension, every program claimed that the file had been corrupted. And, it *had*...
Except QuickTime could read these files. It played them back precisely in the screechy tone that QuickTime 3 users had known, and disabled "Background Music" after hearing. QuickTime Pro will also export any file opened. So, I exported all of these special Midi files to .MID, and voila! It worked, and now I have a database of these files ready to share with the world.
I sure wish I had all these Midis when I was doing my soundtrack remake for Marathon (see thread "Complete Marathon 1 Music Remaster")
So, here you go. Many music programs can import MIDI files and then you can assign your own instruments to each channel, and the rest is history.
***TRANSFER WHEN READY***