I’ve spent the past hour trying to research this but I just can’t understand it. I understand that this a software development forum, but I have a feeling someone here is more likely to have a better understanding of this than me.
I would like to use the FLAC command line tool as part of free closed-source software that may eventually be backed by advertising (on a website and or in the app).
Would I be right in thinking I can freely include this tool as an external binary file that will be called from my software as long as I somehow include its source code and licenses?
From the README:
This file is part the FLAC project. FLAC is comprised of several components distributed under difference licenses. The codec libraries are distributed under Xiph.Org's BSD-like license (see the file COPYING.Xiph in this distribution). All other programs, libraries, and plugins are distributed under the LGPL or GPL (see COPYING.LGPL and COPYING.GPL). The documentation is distributed under the Gnu FDL (see COPYING.FDL). Each file in the FLAC distribution contains at the top the terms under which it may be distributed. Since this particular file is relevant to all components of FLAC, it may be distributed under the Xiph.Org license, which is the least restrictive of those mentioned above. See the file COPYING.Xiph in this distribution.