usccb.org/nab/
has the daily readings.
As for the music, that’s a lot harder.
I did find this site:
cpdl.org/wiki/index.php/Main_Page
For the words of the Ordinary, see
cpdl.org/wiki/index.php/Ordinary_of_the_mass
It is a secular site for choral music, and to use it to its best, you should be familiar with some composers. You can search for Latin text on the “text and translations” pages. You will need at least Adobe Reader; and/or two music reading programs. (See the help file.)
But the fact that it’s choral music separates it from the OCP, if you dislike their stuff as much as I do!
I must tell you, though, I had a hard time actually getting to the sheet music.
You can also find sites for Gregorian Chants.
Good luck!