I Found it! AAAAmen

Well I was having all sorts of sound issues. Engines noise outside with no engines running. No 3rd party Sounds, no panel click sounds. No apu sounds on aircraft I know that had them. I must have uninstalled and installed FSX 3 or 4 times. Drivers all of that blah blah blah. My Fix? Went into the audio manager and switched from 5.1 to Stereo. Simple effective and enough to drive you nuts. Hope if any of you are having issues like that give it a whirl. I hope all my efforts for myself help someone else. Peace!