ICEL has recognised the reality of the "global computer network commonly known as the internet" and has given permission to post texts with attribution. Cf. NLM: ICEL Policy on Global Computer Networks
This is very good news. It will enable musicians to post settings of the Mass on the internet free of charge, as many have undertaken to do. It will also make it possible for people to provide useful leaflets and booklets for people to use at Mass.
Many thanks to ICEL for this sensible and wise step forward.