You are given a sentence in Spanish. Your job is to translate the Spanish sentence into English.

Por supuesto, los libros hablados para ciegos son antecesores a toda esta tecnología.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Of course, talking books for the blind predated all this technology.