2001 Ford Taurus

Noises problem
2001 Ford Taurus 6 cyl Front Wheel Drive Automatic 160000 miles

There wass a dragging from what sounded like the back end while the car was moving forward about 25 mph or more. Now it has escalated to a clanking noise & I am told by others that it seems from the front end but that is up for debate.
I have had brakes ( front end) & struts replaced recently.
What NOW?
April 29, 2009.

Can you describe the sound? Could it be a bent backing plate behind the front brake rotor rubbing the rotor itself? Does the sound change with speed? Is it a metalic sound?