Please use the following link to download Sequel 3.http://support.steinberg.de/ISOs/Sequel_3.0.1.iso
This is a .ISO disk image that must be mounted to your operating system to be installed. If you have Mac OSX 10.? or Windows 8 it will mount the disk image for you. If you have Windows 7 or lower it needs to be burned to a DVD-R to run the .exe installer.