SOUND PROBLEMS ?

Having a few sound issues,once i change views the sound go quiet buzzsaw sound on full throttle goes,vc call outs very quiet,pressing "Q" twice does not work,have removed sounds and placed TSS SOUNDS instead and the issue goes away,and even better no more crashing after flight to desk top!!,but sounds are not upto PMDG Quality ,so is the sound file causing crashes??,have restarted FSX several times and closed flight with no crashes,put original sound files back and FSX starts to crash after flight?,Amazing framerate of 45-55fps i7 [email protected]P67 SABERTOOTHXM3 1866 ddr3GTX 580 MatrixVORTEX 3-OSVORTEX 3 FSXWINDOWS 7 64BIT