> Seems to me the BSD is a streamlined version of open-source. OSI hosts a definition > of it > > http://www.opensource.org/licenses/bsd-license.php > > and doesn't contrast it with 'open-source', so I'm not seeing a 'conflict' per se.
Right, the "new" BSD license where you don't have to credit the Trustees of the University of California in every source file is pretty much the simplest open source license you can have.
MAME's variant of the license makes it not open source by restricting commercial use. Using the common terminology it's free as in beer, but not as in speech. (FSF would say it's "free but not libre").