How to Uninstall Smartcast Audio Driver
Audio driver is made up by the content of SmartcastADrv.driver directory located at this path: /Library/Audio/Plug-Ins/HAL/
Problem can be that /Library directory is not, by Apple default, visible in Finder. Thus, we recommend to follow these steps:
1. Open Finder window, go to Menu Go, item Go to Folder
2. Type the path and click Go
3. Move the directory SmartcastADrv.driver into Trash, e.g. by right-button clicking on the directory name and chosing Move To Trash...
4. Type your password ...
5. And finally restart your Mac