This is the source code of libmikmod and mikmod:
http://mikmod.sourceforge.net/
https://sourceforge.net/projects/mikmod/

libmikmod is a library supporting many formats, including s3m, it, xm,
and several others. Mikmod is a module player based on libmikmod.

LICENSE:
Mikmod player is is covered by the GNU General Public License v2.
libmikmod is covered by the GNU Lesser General Public License v2.1.