I have a .wav files sampled from a pipe organ.The volume of the
WAV files are low and i wan't to increase the volume of WAV file.Please let me know if
there is any better program that can increase the volume of the organ stops
and the voice quality should be the same.I have tried many programs
and the volume increases but the disturbance also rises to a certain
amount.

Please help me out if there is any good program available for this purpose.

Thanks,
Sunny

So when you said you had tried other programs, was that using their "Normalize" function that maximises the level of the wave?