This plugin is used to present audio files, typically two versions of the same audio (for instance, an unmixed, “raw” version and the final mixed version), in a time synchronized manner: by switching seamlessly between files when the user presses the respective button.

Finally a direct A/B (or even A/B/C) comparison is possible on your website! You can showcase as many files on one page, and they intereact with each other, so that no two files get played at the same time.