The Most Beautiful Thing This Side of Heaven
Link to Windsor, Ontario Latin Mass site has collection of audio and music for Collects, Epistle and Gospels for all Sundays and Feasts and some feasts in the Proper of Saints.
If an Epistle or Gospel for your Latin Mass is not yet notated, you may cut and paste the text into the GABC software here, and select which tone you want. It will produce a high resolution PDF. Useful tool!