A complex project like this has to be done in stages.
The first stage would be to verify that the R4 and the vibration sensor can in fact detect the vibrations of interest. Test by lighting up an LED.
If that works, you need to learn how to generate and play the desired sounds. A Bluetooth speaker is one of many options, but technically very difficult. A DFmini MP3 player would be much simpler.
That sounds like noisy upstairs neighbors. Have some fun with it and simply generate a single drum boom, then a bell, skip and start over, that should drive them bonkers. Then once in a long while add the sound of wood splitting. It should be just loud enough they hear it but not know where it is coming from. Maybe if it is in the kitchen place the sound so it hits there bedroom. They hear it but cannot see it. Have fun!