mpg123-1.20.1, configured using:
--disable-modules --disable-debug --disable-fifo --disable-ipv6 --disable-network --disable-messages --disable-lfs-alias
edited src/libmpg123/mpg123lib_intern.h and changed macros
NOQUIET, VERBOSE* and PVERB() to be 0, in order to disable
some debug messages from the library.