first,try pulling the handbrake on and off about 20 times to setle the shoe position.
then,
with the car jacked up,if you spin the rear wheel,does it bind a bit all the time,or just catch for part of the wheel duration??eg,is it just binding a bit at a certain position??
you can adjust the shoes mate but you have to remove the drums to do it.
get a screw driver in the adjuster mech and prize it apart a bit to move the clicker/self adjuster in a bit.
if its only just catching it will eventually wear in but might start making your drums hot and if there painted it will burn the paint off.
wouldnt of thought youd get that much drone noise from shoes catching slightly though.
even if you have no play in the wheel bearings,doesnt mean there not fooked.
they could have gone dry and just been nipped up to take the play out the wheel.
still sounds like wheel bearing prob to me mate