Hi davidmorris87,
Have a look in Device Manager for the audio device that possibly has a yellow warning symbol indicating that the correct drivers are not installed or possibly the audio device is listed as something other than AD1981B. If so try updating the driver using the ‘Have Disk’ method.
Extract the files from the installation package to a known location.
Click Start > Control Panel.
Double click Device Manager.
Right click the device and select Properties
Click the Driver tab.
Click Update Driver.
Click Browse my computer for driver software.
Click Let me pick from a list...
Click Have Disk....
Click Browse and navigate to the folder where you placed the extracted files.
Click OK.
Click Next.
Click Finish.
Reboot your system if requested.
Rich