I apologize, maybe I am misunderstanding something.
What do you mean “already cached”? Does it mean that all files have already been downloaded? If not, how can I achieve that? That is my main goal; to make available all the files for offline use.
It works, thanks!
I enabled the folder because it was under “Cached libraries” in Automatic media offline cache. I did not realize that was the filtering list, I thought it was selecting which libraries to download.