-Depending on the software being used, third party applications can communicate with Audiomedia III hardware via DAE if you run DAE 3.4.2cs1 and DSI 3.4.2 with Mac OS 9.x. -Due to changes in DAE/DSI 5.0 (and later), third party applications can only communicate with Audiomedia III hardware via Digidesign Direct I/O. Make sure the following items are installed:System Folder>Extensions folder:DSI 5.0.1 (or later)Direct I/O 5.0.1 (or later)