This is where many students get frustrated. You cannot typically find a simple "Download All" zip file easily on the publisher's website without a login.
to the Campus platform, unlocking all digital resources including the integrated audio and video files. Klett Augmented: aula internacional plus 3 audio download better
Many schools use BlinkLearning . Their license explicitly allows downloading of audio resources for offline study. Look for the "Download package" button in your library. This is where many students get frustrated
(not the "Plus" edition) or cannot use the official platform, several repositories host legacy audio files: Difusión Tienda | Aula internacional Plus aula internacional plus 3 audio download better