I don't have answers but there's an old thread here on the subject:
http://www.infekted.org/virus/showthread.php?t=30069
Only problem is it requires you to have both a C and a TI.
Also a little poking around reveals the guy who wrote the Realm: mythology soundset is here:
http://innerportalstudio.com and his name is Eric. You might contact him and see if he has a TI compatible version of the mid file on hand. Please share with us if you get a working copy.