Please post your question only once. This is the third thread on this subject you've posted in the past several hours.
You will need to use Media Foundation in C++ to do the audio manipulations you are discussing. See
Media Foundation Transforms,
WASAPI, and
XAudio2 Audio Effects .
The Media extensions sample (Windows 8) demonstrates how to write and call a MFT to transform a video stream playing in a MediaElement. An audio transform
would be similar.
--Rob
