Freelander prop shaft noise?

Hi,

I have a 'wobbling' noise coming from the rear of my Freelander 2.0 diesel 1998. (like the sound of a helicopter flying some where in the distance!)
At around 30mph it is at it's worse, softening as speed increases?!

It is present when the clutch in or out, which makes me think is something to do with the drive train (prop shaft etc).

What do you suggest I need to look at/check or replace first - there are all sorts of bearings, UJ's, mounts and couplings under there!

Any help or advise would be greatly recieved.

check rer diff mounts (front one fust)
then remove rear prop and see if that makes any diff if it aint the diff mounts.

Then start crying

Thanx for the speedy reply
I'll give the mounts a go... you never know I might be lucky!

Cheers