[warhead]

Hmm, you may be experiencing more problems with the sound going through your house via the floor above and $100 isn't much to throw anywhere. If those are your only 2 real problems you could cover the window with insulation and then cover it with a couple layers of plywood / sheetrock and caulk around it. That would be a cheap solution that would give varying results.

The cheap door solution is to use a thicker door (or add mass to that door) and to make sure the seals around it are as good as they can be.

War