In the Preferences window, there is a tab called "Editors" which seems to be a list of waveform editors you can add and use within FMOD. Is this true? What editors are available to use? How do I add them?
The ‘Editors’ are external editors. In the Banks tab if you right click on the waveform you can ‘Open in external editor’. The perferences page configures which programs are associated with which file extensions.