How do you guys deal with your neighbours or parents if you are still living with them? I didn't hear anything from my neighbours yet but I don't know if I disturb them or not with my music. I normally listen to my music in less than 8 o'clock on the pre.

But I have lots of problems with my parents because of the volume for 6 years now. I am thinking to cover two walls of my room with some isolation material, one wall for my parents, one for the neighbour. Did you all do isolation to your listening rooms? If so, what material is cheap and useful? I don't need 100% isolation like a recording studio, but enough to keep my parents calm : ) You get the idea. Any recommendations are welcome.