People who play loud music can be difficult to deal with but one day, I did get my revenge.
They moved three ladies into an office next to me that listened to wham bam boop boop crap music, turned up very loud, all day long. There was a steel interior door between our adjoining offices which was locked but seemed to funnel it all into my office.
One day, I got tired of asking them to turn it down so I brought a radio to work and pressed it flat against the steel door, dialed in a country music station which I knew that they would obviously hate, turned it on and turned the volume up as loud as it would go. Then I locked up my office and left for the day.
The next day, when I returned to work my radio was turned off but I never heard another peep out of the other office again so I think that they got the message.