MainStage is a macOS-exclusive application that transforms your computer into a powerful instrument and effects processor. The file (Disk Image) is the standard installer format for the software, typically downloaded via the Mac App Store.

If you have downloaded a DMG (Disk Image) file for MainStage 3.6.4, follow these steps to install it on your Mac: Open the DMG : Double-click the MainStage-3.6.4.dmg file to mount it as a virtual drive on your desktop. Drag to Applications

: A window will typically appear showing the MainStage app icon and a shortcut to your Applications folder. Drag the MainStage icon into the Applications Copy Process

: Resolved an issue where the "Do Not Pass MIDI Thru" setting for screen controls failed to work correctly.