An Ethical Spotlight on Unauthorized Copying if Liturgical Music within the Catholic Church. M. Hettinger 2000
Found my pal Maggie's paper on the net while looking for something else. It's a retelling and ethical analysis of the famous FEL vs. Archdiocese of Chicago case, where it was ruled that churches may not photocopy liturgical pieces without authorization.
Great paper, interesting read. Highly recommended.