YES! That is exactly what I wanted. It's a bit bulky in creating a new search filter each time, if different ones are desired. But it does update the list for me.
I suppose until a better method is presented, I can use this. Just take one search for the first filter, then select an option from those presented to further the filter.
It'll be a pain of having a bunch of filters to clean out regularly, but at least it is semi-possible.
With luck, this type of feature will be implemented in the future, in a more user-friendly manner. I dearly love my Winamp for it's Media Library, and wouldn't consider using anything else because of it.