The general settings that govern the operation of Mus2 are located under the Preferences command in the Edit menu (Windows) or the Mus2 menu (Mac).
For sound preferences, click the Playback icon. To change the audio interface you wish to use with Mus2, select it from the Sound Output list and adjust its volume using the Volume slider.
To change the paper color and appearance, click Appearance. The Graphics Rendering slider determines how notation symbols are drawn: pull the slider to the leb for clearer lines; pull it to the right for an appearance that more closely matches printed output.