mrmike16 :
One (or more) of those cables provides audio. It may be in the wrong jack when you have more than one device plugged in.
I do think that this adapter (What you called connectors) is the issue, if it isn't user-caused. I'm not sure what colors are audio in this case, but make sure they are plugged into the right place.
If I were you, I would contact the manufacturer of that product. Or maybe the seller.
a red and white plug right next to eachother is the standard for stereo and mono sound for standard systems like ps2 and the like. Those are plugged into the tv. The others are also plugged in, green for green, blue for blue and so on and so forth also into the tv. Whe i plug the other end that is the ps3 plug into my ps3, it works for sound and video. If i then plug the xbox/xbox 360/XB1 plug into the xbox 360, the sound for the ps3, which is still running in the background, stops completely. IF i unplug the xbox 360 plus, sound comes back. same if i repeat with the xbox360 as the first plugged in. I don't get it. User error? Perhaps. I have no idea. But you're supposed to have all three plugged in any one time (xbox systems, playstation systems, nintendo systems).