In Wwise, you can edit audio files directly in any audio file editor of your choice. First, however, you need to add each program to the list of available editors.
To select external audio editing software:
From the menu bar, click Project > User Preferences.
The User Preferences dialog box opens.
In the External Editors group box, click Add....
The Open File dialog box opens.
Select the audio editor executable (EXE) and click Open.
The editor is added to the list of available audio editors.
To delete an editor from the list, select it and click Delete.
Click OK to save your settings.
From now on, the editor you have added will be available directly from Wwise.
To select the default external audio editor:
In the list of editors, select the one you wish to make default.
Click Set As Default. (This button will not be active if there are not at least two listed editors.)
In most views in Wwise, press Ctrl-E to open the selected items in the default External Editor.