Is this diff whine and r&p or drive shaft bearing proble

[oli]

Right I've jacked the car up and I've noticed a few things.

With the rear wheels off I've noticed there's little play. The car has drums, and the 4 studs can be wiggled/turn ever so slightly (all together, not a single loose stud)

Same both sides - I think this is irrelevent as there will be a little play. correct me if I'm wrong.

Now the noise I think is actually vibrations that increase when the speed increases to a point that it becomes really loud and sounds like a roar of the engine.

I've videod some footage of the car on stands inside and of the rear wheels, I need to convert this or get someone to do this (most liekly) so when its ready I'll upload.

I thought it could have ben the spacers as on the stands in third gear, I noticed the rear wheels looked like they were wobbling only very slightly (wheel bearings!!?!?)

Another thing I did take not of, was that initially I though it was the rear that made this noise but listening (while driving) I could hear the noise just under the floor pan in the front too -but only when i put my head close, whereas the rear is loud. I still think this maybe the propshaft bearings? or the propshaft itself? the diff didn't make any strange noises when on the axle stand.

On the stands the noise was difficult to hear and DEFINITELY more noticeable volume wise on the road - again does this point to driveshaft bearing??? On the stands the wheels are not trying to overcome any road friction and weight of the car, whereas on the road the extra loading on the shaft and bearings contribute to the vibration/noise.

Long post over but i want to give enough info so someone could help my daignose whats happening

comments and thoughts please!