Installers
If you have a license for W4, the installer files can be found here:
https://www.vound-software.com/software-downloads
Otherwise, a free trial version of the product can be downloaded here:
Documentation
YouTube Video Playlist for W4: https://vound.info/w4-video-playlist
Release Notes: https://vound.info/w4-release-notes
User Manual: https://vound.info/w4-manual