The PCI24 audio card needs a software interface or driver to communicate with your audio application. Applications such as Cubase VST use an ASIO interface in place of the Macintosh Sound Manager. ASIO (Audio Stream In/Out) is a VST software interface for input/output of digital audio via audio cards. Please refer to the documentation included with your digital audio software to determine the proper driver/software combination (i.e. ASIO, Sound Manager, etc.). Be sure to check the version of your application as some software developers are changing from the Sound Manager interface to ASIO. The following is a sample of Lucid drivers/extensions used with popular digital audio production applications. Go to the download area at the bottom of this section for a list of the latest available drivers.