And if you want a dumbed-down literal translation, go to Google Translate:

1. Children's voices are present today
praising him who was born to us in a pleasant way,
Given to the Most High God, and from man-man-man,
and from man-man, and begotten from a virgin's womb.

2. He is born in the world, wrapped in cloths,
A manger is placed in a stable for cattle,
Ruler of the heavens, 1 the prince of the hells has lost his spoils.

3. The three Magi came, they inquired a little,
By following the star, by adoring it, 2
Offering him gold, frankincense, and myrrh.

4. All clerics, boys alike,
Sing like angels, you have come into the world
I praise you in the bottom. Therefore, glory to God in the highest.

I don't know where the "1" and "2" in your text came from.

I studied Latin for 6 years. The automatic Google translation is actually quite good.