I'm including this link just for the recored, if someone will do a query about this license.
qouting http://techweb.rfa.org/pipermail/portaudio/2004-November/003942.html ---- begin qoute ---- Hello Dave The second bullet point is simply a polite request. From the point of view of encouraging people to contribute to our project we like the current wording -- in the sense that we want people to understand that we are making it a condition that they are politely requested. But from a legal point of view we intend for the use of the word "request" to be a request only, and not a condition. It's not clear what form a "license clarification" would take if this email is not sufficient, so you may need to find this out from Debian (would they need us to change the wording of the license?). Best wishes Ross Bencina PortAudio founder. ---- end qoute ---- Regards, Lior Kaplan