Hi, I have 4 audio cables entering the wall of my house through a hole
that is missing its wallplate/faceplate. These cables go to speakers
around the house. Because of this, during winter, cold air comes
through this hole. Is there some kind of faceplate that can allow
cables to go through it, but yet forms some kind of seal to keep out
cold air? There is a J-box in this hole. So I should be able to just
screw on an approp wallplate/faceplate.

The size of the hole is the same size as that for a normal 2 socket
power receptacle.

Thanks