Could the noise have something to do with the CV joints? I'm perhaps thinking inner joints here. The noise did not change character depending on which way I turned the wheels. No noise at idle when standing still.
Here are some photos of the CV joints and the driveshaft support bearing. Tell me what you think. Click on the pictures for a larger image.
Driver's side inner joint:
Driver's side outer joint:
Passanger's side driveshaft into transmission:
Driveshaft support bearing:
Passenger's side outer joint:
Passenger's side inner joint:
Video of driveshaft play
Or could it be caused by play in a motor mount?
Video of noise in passenger's side motor mount when rocking the engine by hand