I'm a Delphi programmer (self taught). I'm trying to create an application that 
analyzes PCM audio data with an FFT, displays and changes the resulting 
frequency data, and then reassembles it into time domain. I've been trying to 
write that with a simple class called RealFFT. But I don't have enough technical 
knowledge to use it properly. Can anyone point me to some code or component that 
is DEAD simple to use? I know lots about other areas of DSP, but not this.

Andrew