
Introduction
2
What’s installed on my computer, and why?
The Sound Librarian communicates with the opsix using networking over USB (as opposed to MIDI). Networking
uses the RNDIS protocol, which is included with Microsoft Windows, but not included with MacOS. To
automatically identify and connect with the opsix over the network, the Sound Librarian uses Apple Inc.’s Bonjour—
which is included with MacOS, but not with Microsoft Windows.
So, the installation includes not only the Sound Librarian itself, but also HoRNDIS (an implementation of RNDIS) on
MacOS, and Bonjour on Windows.
MacOS
To install the software on MacOS:
1. Connect your opsix to the computer via USB.
2. Open the opsix Sound Librarian [version number] .dmg file in the Finder.
The disk image will open.
3. On the disk image, open the opsix Sound Librarian [version number] .pkg file.
The installer will start.
4. Follow the on-screen instructions to complete the installation. Enter your administrator password when
prompted.
The installation will run. Two separate items are installed: a driver (HoRNDIS) which allows the computer to
communicate with the opsix, and the Sound Librarian application. The “Registering updated components” part of the
installation may take a little while. The application is installed in Applications/KORG/opsix.
5. If this is the first time that you’ve installed HoRNDIS:
5a. If you are using macOS 10.15 Catalina, follow the instructions under “macOS 10.15 Catalina,” below.
5b. If you are using OSX 10.12 Sierra or 10.13 High Sierra, please restart your computer before using the
Librarian.
macOS 10.15 Catalina
macOS Catalina has new, stricter rules about installing system extensions such as HoRNDIS, so you’ll need to go
through a few extra steps. After the installation begins, you’ll see a warning dialog appear: “System Extension
Blocked.”
1. In the dialog, press the button “Open Security Preferences.”
The Security & Privacy pane of System Preferences will open.
At the bottom of the page there is a lock icon, with the note “Click the lock to make changes.”
2. Click on the lock.
A dialog appears: “System Preferences is trying to unlock Security & Privacy preferences.”
3. Enter your user name and password.
The Security & Privacy pane will be unlocked.
At the bottom of the page, there will be a message that “System software from developer “KORG INC.” was blocked
from loading.” Next to this message is a button labeled “Allow.”
4. Click the Allow button.
HoRNDIS should now be enabled.
Windows
To install the software on Windows:
1. Double click “Korg opsix Sound Librarian [version number] Installer.exe.”
The installer will start.
2. Follow the on screen instructions to complete the installation.
The installation will run. Two separate items are installed: Apple Inc.’s Bonjour, which allows the computer
to communicate with the opsix through RNDIS (see below), and the Sound Librarian application.
3. After the installation is complete, if you have not already configured the RNDIS driver, do so now.
The opsix uses Microsoft’s RNDIS to communicate with the computer. If you’ve had to update the opsix software or
have installed the opsix Sound Librarian, you’ll already have configured RNDIS, and can simply launch the Sound