Developer won't release source licensed under modified BSD.

[Electronjockey]

The subject says it all.
There is a particular application that is somewhat widely distributed.
It is a single stand alone executable that is distributed with a
modified BSD license (two paragraph). The developer is refusing to
release the source (application and developer name withheld to protect
the guilty - for the moment). Does anyone on this list have any
experience dealing with this sort of situation, or can anyone point me
in a direction. If this is not the appropriate list for this topic,
redirection is appreciated.

Regards,
Todd Hicks