On Tue, Dec 31, 2013 at 12:26 PM, Dominique Michel <dominique.michel@vtxnet.ch> wrote:

In gentoo, we have another politic with the licences. The free
licence are accepted by portage by default, and for the other licences,
the user must accept them on a per package basis. For linuxsampler,
both the portage versions and the pro-audio overlay live version are
considered as GPL2, as stated into the source code.

It isn't clear that linuxsampler's license is legal. They use the GPL2 and then add restrictions, which is prohibited by the GPL. It may or may not affect the license, but either way it is a wierd situation.