DOWNLOAD THE WIDGET
After you downloaded the widget on Musegain.com double-click on the .Mulib file. If Muse is not open already, it opens Muse and the file will be added to your library panel. To use the widget, Open a new file in Muse. On the right hand side, you can see the library panel. If it is not there, turn it on in the Window menu (Window > Library). When the library panel in opened, find the folder called Musegain - Audio Player.