Double-click on one of the downloaded vstsound files.ISO disk images can be easily mounted as virtual volumes by double-click. Content containing multiple vstsound files is being provided as an ISO disk image. Cubase content generally consists of vstsound files.If they are missing or not up-to-date the installation without the Steinberg Download Assistant will fail. ⚠️ Requirements for installations without Steinberg Download Assistantīefore installing any of the Cubase 11 components below the following utilities must be installed resp.