There was a similar case with LinuxSampler a few years ago, restricting *use* of the program in commercial applications. It was removed from Debian and it was concluded that its license is inconsistent, nobody can actually comply with it, because the GPL and the added restriction contradict each other. It was also rejected from non-free (undistributable software). https://lists.debian.org/debian-legal/2005/09/msg00271.html