Since the user might not be aware of the difference between streaming and downloading, I should explain the legal methods. Maybe they're looking for a direct download link, but it's important to guide them towards services that have the rights to distribute the music. I should warn against illegal downloads to protect their device and respect copyright laws.

Next, I should consider the best legal ways to download music. Legal options include streaming platforms like Spotify, Apple Music, or YouTube Music. These services offer high-quality downloads, especially the premium versions. Also, checking if the song is available on Google Play Music or Amazon Music might be helpful.

Additionally, verifying if the song is correctly titled "Que Agonía" by both artists. Sometimes there's confusion with regional titles or alternate versions. Ensuring the correct song title and artists will help them find it more easily. Maybe mention looking up the song on the platforms to confirm the artists and track.

Finally, if the song isn't available on those services for some reason, suggesting they check other platforms or contact the record label for download options. Also, mention the importance of using secure and trustworthy sites to avoid malware when downloading.