De Ushuaia a la Quiaca ?

I’m searching what is and what is the title of this piece of music . According to what is written there, it would be called “De Ushuaia a la Quiaca” and would be part of the soundtrack of the movie “motorcycle diaries”, composed by Gustavo Santaolalla.

However, according to wikipedia, “de Ushuai a la Quiaca” would be a serie of recordings of traditionnal Argentinian music, published between 1985 and 1999. The project being directed by the same Santaolalla.

I’m confused. I’m not sure if there’s a mistake somewhere or if Santaolalla reused the title “From Ushuaia…” when he made the soundtrack of the movie 20 years later, or if he picked one of the pieces of music from 1985 for the soundtrack (and in this case, which one?). Could someone shed some light on this? Thanks in advance.