The whine you're hearing is normally caused by the fluid foaming and the front pump cavitating. Usually this is caused by a low fluid condition but can also be caused by a loose filter or clogged filter. Since I am not familiar enough with a Taurus tranny either the filter will be set in a rubber o ring or a gasket. If either the gasket or o ring is missing it will suck air and cause the noise you describe.
I would take it back and have them check it. I guarantee you they are going to say there is nothing wrong but I would persist.
