Load asset bundles from local files in player

I have some asset bundles that will be downloaded often and placed in a local folder.
How do I load them inside the player?

The folder will be something like /assetbundles.
The player will get some asset bundles names and will manage one at a time.
These asset bundles contains, each one, an .anim file that will be managed as AnimationClip and immediately played.
So the player take a name, get the asset bundle in /assetbundles/name, load it, get as AnimationClip and play.

I have solutions to asset bundles in resources folder or downloading from the internet, but not loading from local files. How to solve this? Remember, working on a player, not the editor.

Thanks!

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