How to delete old audio interfaces I used to have WavTap and Airparrot but their audio interfaces are still straying in my other audio interfaces, and I would like to delete them.

How can I do this? I tried Audio / MIDI configuration but can't click the (-) sign to delete them.

Example image:
Just a thorough answer for uninstalling WavTap quickly:


Open a terminal and clone the official WavTap project:


git clone https://github.com/pje/WavTap


cd into the directory (cd WavTap)
Run sudo make uninstall to remove all drivers and traces of WavTap
You can then remove the WavTap source directory.