Here is the link of the first Spanish Audio Latino 1977 Star Wars is set to Harmy versions 2.0, 2.1 do not know if it works for the new version 2.5.
The audio comes from an old VHS tape. I'm trying to get the tape Umatic. Yes I get that audio will go up too.
https://mega.co.nz/#!WRt0UIrI!XpTSnCSjVIbBtB7GUPS-03WRtEs8h5pr2onIjVkSHOI
cheers!