You already wrote the answer.

The Media Room/Library is simply a place to see a collection of clips. You don't actually need to import clips to begin with because you can drag and drop clips from File Manager directly on the timeline and they'll automatically be added to the Media Room.

Interestingly, clips from the Downloaded folder aren't ever added to the Media Content section, probably because all those folders are treated as separate libraries.

Quote You already wrote the answer.

The Media Room/Library is simply a place to see a collection of clips. You don't actually need to import clips to begin with because you can drag and drop clips from File Manager directly on the timeline and they'll automatically be added to the Media Room.

Interestingly, clips from the Downloaded folder aren't ever added to the Media Content section, probably because all those folders are treated as separate libraries.

Thanks (again) OptoData!

I usually don't have the downloaded folder open, I also have too many clips...thought it would just be easier to search for the clip in the PD downloaded media, drop n drag it to the media room.

But I have an answer!

I see what you mean. There doesn't seem to be any way to sort, filter, tag or set favorites in the Downloaded folder, and if you have a lot of content it's difficult to manage.

This seems like a great reason to use File > Rate Us & Provide Suggestions.