I have a creative X-Fi sound card and I'm running Vista 64-Bit. With my other programs which also use sound I don't have any problems. I even updated to the latest driver verion.

When I start FSX (when not muted, i hear the background theme). Once I start "Fly Now", and I'm in the cockpit, I hear the sound with much noise and then suddenly it dissapears. No sound anymore during the whole flight.

I've also tried every sound output selection possible in FSX.

Does anyone has an idea?