That wall is usually a $1,500+ software license for the full version of Kontakt, or the steep learning curve of scripting.
Open Kontakt’s library tab. See that gorgeous custom header image? That’s yours now. KLC lets you embed JPEGs as wallpapers and logos, turning your “Rainy Day Piano” sample pack into a commercial-grade asset. klc kontakt library creator free download
The process of creating a custom library typically follows these steps: That wall is usually a $1,500+ software license