: Bulk Media Downloader and Audio Downloader Prime (available on Chrome and Firefox) can scan a webpage for MP3 or MP4 files and download them directly.
: This downloader allows you to select a specific audio language before downloading a video from sites like YouTube or Vimeo.
: This site is a specialized project primarily designed for the visually impaired. It hosts the audio-only portion of audio-described films and TV shows from various platforms and countries.
: Many legal services like Google Play Movies & TV and MX Player allow you to download content for offline viewing, which includes the ability to switch between available audio tracks. Tools for Extracting and Downloading Audio
: This digital library contains a vast collection of public domain and historical media. You can find high-quality audio files for older films and recordings by searching for specific ISO language codes or titles.
If you are looking for external audio tracks, these sources are the most reliable:
: For creators, the YouTube Studio Audio Library offers a massive collection of royalty-free music and sound effects that can be downloaded legally for use in video projects. How to Use External Audio with Your Movie