The Set Up option is the Settings Menu. From here you can select a couple of settings for your experience with the movie. There are audio options for English Audio, Spanish Audio, and English Descriptive Audio for those who are visually impaired, and subtitles for English and Spanish.

As for the Spanish Dub of the film included in this release, the cast is the Español Latino cast from the Mexican Dub of the show. At least I think it is. None of the voice actors in the Spanish Dub included in this release are credited anywhere in here, so it's hard for me to know for sure.

Especially since I only have some of the Latin American Dubbed songs to reference to the voices in this film. They sound close, very close, so I wouldn't be surprised at all if they were. An interesting note about the Spanish Dub, Songbird Serenade's spoken dialogue is dubbed into Spanish, however her song is not. That is still Sia, and the song Rainbow is completely in English.

It's a little odd, especially when all the other songs in the film have been dubbed.