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What is it?

Upon loading metadata of a file, Amethyst will create a .amf similar to Ableton Analysis Files (.asd) to store it’s information for faster future access

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Location

This file is stored in the Metadata Cache folder within the storage folder and it’s a JSON file containing the metadata of the given audio file. The filename is going to be the same as the name of the audio file it stores metadata for.

eg. enjoii - Never Say Goodbye.flac => enjoii - Never Say Goodbye.flac.amf

If the file is renamed Amethyst will have to re-cache the metadata, creating a new file resulting in orphaned copies of cached files.

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Regeneration

These files are generated when Amethyst analyzes a file for metadata. They can be rewritten by forcefully refreshing metadata within Amethyst from the dropdown menu or with the shortcut CTRL + ALT + R.

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Deletion

As mentioned above, all metadata caches are stored in %appdata%/Amethyst/Metadata Cache. Simply deleting the files within the folder will achieve cache deletion.