Though named as Vocal Remover, the plugin is used for removing or extracting sound in a specified direction span from a stereo sound. If you use it to extract the center vocal sound, it becomes center vocal extractor. If you use it to remove the guitar sound on the left, it becomes a side guitar remover.
You will receive an email from 2nd Sense Audio with your serial number and a download link. Follow the link and install Vocal Remover, then use the serial number finishing registration, and you are good to go.