have you tried this... i havent gotten a reply from you about trying it.. apart from saying you have reinstalled.. Mac OS X - Verify that sound card is installed correctly To check the correct installation of your sound card on a Mac, do the following: 1. Open Macintosh HD > Applications > Utilities > Audio Midi Setup and click the Audio Devices tab. 2. For Default Input, drop-down the menu and make sure your sound card is displayed in the list. If it is not, you may need to reinstall the drivers for your sound card.