TAudioIO provides a drop component for doing modifying Audio I/O on the fly.
Two sound components TAudioIn, and TAudioOut are provided.

The components were built under D3, but should work under D2.

Files
    TAudioIO.pas                  Defines the components
    TAudioIO.hlp                  Help file for the components

In addition, the following files are provided for reading different
format wave files as 16 bit PCM.  These are NOT used in the component,
but in one demo

    UAFDLL.DLL		          Read in wav and au files
    UAFDEFS.PAS                   Definitions for UAFDLL

Demostration programs
    TAudioSine

To install, follow the usual procedure; choose Install new component from
the component menu, and add AudioIO.PAS. 

TAudioIO provides context sensitive help for the audio components for
Delphi Version 3.

To install, copy TAudioIO.Hlp to the Delphi 3.0 help directory.
This is usually c:\Program files\Borland\Delphi 3\Help
Then Edit Delphi3.CFG and include the line

   :Link TAudioIO.hlp

Now you must make Delphi 3 recompile the help files, you can do this
by changing the date of DELPHI3.CNT.  If you have touch just

   Touch DELPHI3.CNT 

Or just edit and save this file.

F1 should work on the components.