Installing the Two notes Wall of Sound plugin on MacOS Sierra

Gatekeeper in MacOS Sierra is now very strict, and won't allow the user to install a software coming from a source different from the AppStore or an identified Mac developper.

Two notes is an identified Mac developper, but it can happen that the system does not want to launch our installer.

In that case, please use the command right click -> open rather than the double click. It will give you the possibility to launch the installer.

If you want to get rid of the extreme Gatekeeper security, please follow this tutorial (for advanced users only):

http://osxdaily.com/2016/09/27/allow-apps-from-anywhere-macos-gatekeeper/