Hello Magica Alfa
Click on downloads and also download shop. http://www.wersi.co.at/Downloads/
In case you’re wondering, Wersi was the first manufacture to introduce computer keyboard/organ instruments in 2000, and they have been upgraded over time. (And yes they can use VST instruments)
To see how they have developed over the years, you can download a sample magazine from here. http://www.worldofoas.co.uk/sample.htm
BTW. If you purchased one of the original versions, it can be easily upgraded to the very latest version.
Enjoy.

Bill