I have the same problems but in all my aircraft. The engines are off but there is this background jet engine noise. I sounds like a APU but the APU is off. I even turned all my sounds OFF
but the sound still stays there. The engine sound turns off when I press Q but comes right back on when I engage the sound again.
Any ideas? It overrides the sounds of the engines in the cockpit too so I hear two engine sounds, its very annoying.
Also if I am running engines full power and then go to idle sometimes the engines still have the sound of being at full power. Any ideas? Is this a FSX bug? Or is something wrong with my computer.
I have been trying a lot of stuff if I can get the problem fixed I will let you know of a possible solution to your 744 problems.
[Edited 2010-06-12 14:55:14]
"It was just four of us on the flight deck, trying to do our job" (Captain Al Haynes)