-The Digidesign Sound Drivers extension (which provides both audio input and output from the Audiomedia III card via Sound Manager) is not compatible with Mac OS 9.x**. Unfortunately, there are no plans to update the Digi Sound Drivers extension. If installed, remove both the Digi Sound and Output Drivers extensions.-You may still route audio Out of the Audiomedia III via Sound Manager with Mac OS 9.x by installing the following software components:For use with all computers running Mac OS 9.0, 9.0.2 or 9.0.4:In the System Folder>Extensions folder:-DigiSystem INIT 5.0In the System Folder>Control Panels folder-Digidesign Control PanelFor all systems running Mac OS 9.1:In the System Folder>Extensions folder:-DigiSystem INIT 5.1 (or later)-Direct I/O 5.1 (or later)In the System Folder>Control Panels folder-Digidesign Control Panel