Default folder for file-type TV's?

A couple of releases back (in the 2.1's I think) there was a nice feature that would let you specify a base path for your file- or image-type TV's. I guess I missed the discussion whenever this was removed. Is there a new, recommended way to accomplish the same thing in the 2.2 series? I've created an image TV in a new site, and it doesn't reliably default to the base folder where the images are stored, even if that folder was the last accessed.

this is done now by mediasources. You would define a new mediasource with its pathes and choose this mediasource for your TVs

Thanks - works really slick. Sorry for the delayed reply, but this lovely new (not)improved forum system only sends me subscription notifications when the mood strikes.