Soundproofing a finished room?

[Dumby]

Where to start, let me see pics of your room and what your thoughts and ideas are...also what you wished you had done. I need to reduce the amount of volume escaping the room. Thank you gentleman!

[pandamonk]

Installing seals around doors, and sealing up any gaps will help isolation.

Isolation requires mass and no air-leakage. The most efficient use of mass is through a mass-air-mass system.

If your room is finished, you probably wont want to install a second, decoupled, room within. So you will have to seal up any gaps, sort your weak links, and be happy with it.

Weak links can include, doors, windows, roofs, etc.

[TexRoadkill]

Originally Posted by pandamonk

Weak links can include, doors, windows, roofs, etc.

as well as electrical outlets, lights, switches, drywall seams...

[Dumby]

The door trim isn't put on on the inside of the room. What should I fill it with to insulate it?

[bpape]

Stuff with standard insulation and then install the door trim to cover the gap and provide some mass over the opening. Caulk behind if you want.

Bryan