Mark wrote:

I think our walls between us and neighbours is quite thin you can hear
loud conversations and music at all times of day and night. We have
now fallen out over music played at 11.30 at night. Any ideas on sound
proofing and how effective it would be?

--
Mark

I can't think of an effective way to sound proof.

HOWEVER, used low-watt CB AM radios (e.g., Cobras) with antennas are
pretty cheap, so here's a thought in the "fight fire with fire" vein:

http://groups-beta.google.com/group/...0b450f0086065d

http://groups-beta.google.com/group/...73d4a63d340185