If you plan to use the External Source plug-in you must specify the location of the External Sources List file. This file is a very simple XML file that specifies the following:
The location of the external audio files that can be associated with the template that you created in Wwise.
The Conversion Settings that will be used to convert each file.
You must also specify the folder in which the converted sources will be saved so that they can be used by the Wwise sound engine at runtime.
To specify the input/output paths for external audio sources:
From the menu bar, click Project > Project Settings.
The Project Settings dialog box opens.
Switch to the External Sources tab.
In the Input Path group box, specify a folder where the External Sources List file (WSOURCES) is located by doing one of the following:
Click in the External Sources List and type the path where the External Sources List file is located.
Click the browse button […] that corresponds to one of the game platforms, navigate to the folder that contains the External Sources List file for that platform, and then click Open.
Repeat step 3 for each of the active platforms in your project.
In the Output Path group box, specify a folder where the converted external sources will be saved by doing one of the following:
Click in the External Sources Output Folder list and type the path where you want the audio files to be saved.
Click the browse button […] that corresponds to one of the game platforms, navigate to the folder where you want to save the converted audio files for that platform, and then click OK.
Repeat step 5 for each of the platforms.
Click OK to close the Project Settings dialog box.