It is a Opti Audio 16 driver. You can install this driver by go to your control panel,then double click 'Add New Hardware' and follow the instructions which will appear in a small window. Or double click 'My Computer' then right click 'properties' and click 'Device Manager' at the top of small windows and chose 'sound, video and game controllers'.After that, click to properties at the bottom of the windows and follow the instructions.If you can't make it,go to control panel and click 'Add New Hardware' and follow the instructions guide.
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