What a fantastic addition the SeismoSoft software set. Especially for someone like me working on research in an area - the New Madrid Seismic Zone in the U.S. - where we have virtually no large magnitude recorded ground motions.
Glad you liked it, and find it useful. We have already received feedback from other users on a couple of small modifications that we could introduce (especially on the management of envelopes shapes) to make the program even more productive. We will make them as soon as we find the opportunity.