Roman Catholic Resources

I was reading in the Catholic news magazine that the Vatican has ruled "Yahweh" should not be used or pronounced "in songs and prayers during Catholic masses.   Nobody has heard this and know why the Vatican did this? Related posts:

1. Catholics and other Christians: How do you feel about this news with respect to name of God?
2. For Catholics: What is your opinion on the Mass?
3. Looking for a "different" Christmas Song for a Catholic mass piano / vocal.?