Ableton Live

Mac OS

1. Click on Live in the main menu and select Preferences
2. Select the File Folder tab and make sure Audio Units are enabled, click to Rescan if the Audio Unit list is not automatically updated. If you are using the VST-version, make sure that the VST path is set to your VST folder, and that you have enabled VST2.
3. Close the Preferences window, your XLN Audio plug-ins will now be available in the plug-ins list in the top left.
4. Double click or drag the desired plug-in into Ableton Live.

Watch the video below for a visual guide:

Windows

1. Open up the XLN Audio Online Installer and click on the Advanced button in the top section.
2. Go to the VST64 tab
3. Make note of the plug-in installation path
4. Launch Ableton Live, click on the Options menu and select Preferences.
5. Go to the Plugins tab
6. Enable the Use VST2 Plugin Custom Folder option
7. Click Browse next to "VST2 Plugin Custom Folder"
8. Navigate to the path from step 3 and click OK

XO will now be available in the plug-ins list in Ableton Live. Double-click on XO to load it on a new midi track.

Here's a visual guide: