If you have installed previous version of ACS or NewAC, uninstall it before installing the new version. 
Click Component->Install Packages menu item. In the opened dialog box select 
the Audio Components Suite package and click "Remove" button. Make sure to remove 
all the previous version files from the IDE search path.

To install New Audio Components package, first compile the package. Create or select 
directory where you want the components to be installed (you can use your Delphi 
lib directory). We will call this directory NewAC directory. Now go to the Source 
directory of the NewAC distribution, and copy all the files to the NewAC directory. 
Go to the NewAC directory, open NewAC.dpk file in your IDE. Press "Compile" button 
in the package manager window. Press Install button.. After this the two new tabs: 
"Audio I/O" and "Audio Processing" will appear on the components palette. 
Unless you have selected your Delphi lib directory as NewAC directory, 
you will have to add the NewAC installation directory to the Delphi libraries search path. 
This can be done on the "Library" page of the "Environment Options" dialog box 
(Tools->Environment Options... menu item).


Precompiled third party dlls required by some of the NewAC components can be downloaded here:
http://symmetrica.net/uploads/acs/windlls.zip

Third party libraries' sources can be downloaded here:
http://symmetrica.net/index.php?page=libsources

You can contact me at anb@symmetrica.net