gogo - when you said your DH put sound proofing in the floor joists, can you show us a photo? Was it underneath? We might do the same... Oh, but you have gyprock now... Do you have any pics?
Sorry T, no photos, but DH said he just put it under the floor joists
I believe a decent HT room will increase the home value dramatically like nice kitchen or garden.
My budget is limited, I was thinking to spend money for cabling, lighting and the equipments.
Acoustic wall and floor is another story.
Maybe I should meet your brother to have a deal with 'Pal' rate.