Seeking to keep this request alive as a hopeful new function/feature in either the player directly or from within the remote.
As previously stated, if Foobar can do it I am sure you can did it with your own spin. As things still stand - especially when making use of playlists, we are seemingly still locked into the backend folder structure of our music. Changing criteria around this with the fields provided does not truly make a difference. Liveable but I know it can be so much more.