I have nearly exchanged all the Woff game music by other music or by the original version, with no problems. While Matt does make a very good game music, sometimes it is nice to hear something different usely based on nostalgic feelings. No problems if using the JSGMEtool.
I have as intro very scary music like something happen thats is not good.
And about why leaving Woff, I think more members here will leave Woff not because of FC but because of Wotr.
For me I have always supported a good WW1 game. Still remember at the first day of release from OFF3, I did consulting Olham, if everthing was good, (DVD and payments). Was afraid of preordering, shipments and the online payments. :-)