This software is a free and open source library designed to facilitate the reading and writing of XSPF playlist files.
One thing to keep in mind is that libSpiff is licensed and distributed under the terms of the BSD License and the GNU Library or Lesser General Public License (LGPL), so make sure that you're comfortable with these terms before using the software. With that said, if you're looking for a powerful and flexible solution for handling XSPF playlists in your C++ project, you might want to give libSpiff a try.