Click Get under any sound you’d like to have in your library, and it will begin downloading and installing right away. Once installed, Muse Hub can be opened by clicking the application icon in the menu bar (macOS) or system tray (Windows).
Muse Sounds are installed using the Muse Hub application, which can be downloaded here on. Muse Sounds is a library of sophisticated plugins that provide realistic playback for MuseScore.