OK... A bit of help for you guys.
DVD Titles.
1 A Dormir: Literally, "to sleep" in the imperative. Could be translated also into "Let's Sleep".
2 Me thinks it should be "Exitos Musicales". Which translated is "Musical Hits".
"Existos" isn't a correct Spanish word, though "existo" is, which means I exist, conjugated for first person singular present tense.
And though the capital E of "Exitos" should have the Spanish accent (É), modern standards have been relaxed so that capital vowels at the start of a word which should be accentuated don't have to be.
3 "Vamos a Cantar": "Let's Sing!"
4 "Me Gusta Ser Yo": "I Like Being Me".
If you have other questions about the dialogue, LMK and I'll try to help.
Will contact BuckBeaver later, hope you're having a happy holiday season.