JMBCV wrote:

I have a neighbour who drives me beserk by playing loud music at
all hours and just shouts abuse when I ask him to stop. I'm
currently going through the long and tedious route of
complaining to the local Environmental Health people but that
doesn't stop the noise in the meantime.

I found an old post on Google which claimed that a shortwave
transceiver and a power amplifier could be used to create
interference, distorting the neighbour's music so he turns it
off. It sounds very tempting.

Would this method work if he was just using his hifi to play a
CD? I'm not sure if it's supposed to work by interfering with
his speakers or his radio reception.

Thanks in advance for any comments

Smith & Wesson has the answer to your problem.