yes delete all the combat mp3s and the eqtheme mp3 and it will restore the original theme and the combat midis
also if you have windows 7 or earlier i highly recommend you see this thread:
http://www.project1999.org/forums/sh...ad.php?t=27308
it will make midis on your computer sound the way the original midi music sounded back in the day and is awesome, definitely do this