Since SAM Broadcaster is primarily in English and requires a license after the trial, you might consider these free alternatives that often support Spanish: : A lightweight tool for live broadcasting.

Esta versión es valorada por ser una "estación de radio en una caja" con herramientas profesionales: Doing Live Radio with SAM Broadcaster - CHAPTER 2

: Many "gratis" links found on third-party forums or torrent sites for version 4.2.2 often include "cracks" or unauthorized modifications that may contain malware.