FLAC BSD 3-clause license

The Praat source code contains a copy of the FLAC software (see Acknowledgments). Here is the FLAC license text:

`libFLAC - Free Lossless Audio Codec library
` `Copyright (C) 2001-2009 Josh Coalson
` `Copyright (C) 2011-2016 Xiph.Org Foundation
` `
` `Redistribution and use in source and binary forms, with or without
` `modification, are permitted provided that the following conditions
` `are met:
` `
` `- Redistributions of source code must retain the above copyright
` `notice, this list of conditions and the following disclaimer.
` `
` `- Redistributions in binary form must reproduce the above copyright
` `notice, this list of conditions and the following disclaimer in the
` `documentation and/or other materials provided with the distribution.
` `
` `- Neither the name of the Xiph.org Foundation nor the names of its
` `contributors may be used to endorse or promote products derived from
` `this software without specific prior written permission.
` `
` `THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
` ```AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
` `LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
` `A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
` `CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
` `EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
` `PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
` `PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
` `LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
` `NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
` `SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
`