This is the place where you scan your VST Plug-ins in order to use them in Lié. To scan your VST Plug-ins, click on “Options” at the bottom of the “Available Plugins” window, then select “Scan for new or updated VST plug-ins”.
You can now specify in which folders Lié should look for VST Plug-ins. If the specified default folder doesn't contain all your VST plug-in, then you can choose a custom folder by clicking on the '+' icon.
Hit the 'Scan' button to confirm your choice. Scanning may take a few moments. Once it’s finished, the “Plug-in Folder” window will display the list of all VST plug-ins that were recognized.
It is likely that you will get a notification about certain VST plug-ins not being recognized. Don't worry: Most of the times, these will be VST effect plug-ins, not VST instruments. Lié can host VST instruments exclusively.
If some of your plug-ins are listed in red, they may have a compatibility issue with Lié: You can try to use “Force-scan” in “Options”. However, this procedure may cause instabilities with your DAW.