i took a midisport uno usb interface. I connected the one edge to the usb connector of the imac g3 and the midi cable in and midi cable out male connectors to the female midi in and midi out connector of roland mt-32. Then i installed the cd software (oms 2.3. 8) for mac os 9 (i have mas os 9.1 and mac os 9.2 installed). I tried to run some games of sierra that support roland mt32 but it says that it does not find midi manager. I don't know why but when i restart the imac it always shows one message that finds usb midisport uno but no software. I tried also this: The sierra games have a folder that contain a file named midi manager. When i try to run it , it says that i have to copy this file to the extensions. So i copy it to system folder/extensions, i try to run a game and it says again that cannot find midi manager. What can i do?