switch from libmad to libmpg123 libmpg123 is more "loud" than libmad, at least for the mp3s that I have around. Is also newer and maintained. I've heard is also faster, but amused is so simple that it doesn't make any difference.

drop AMUSED_VERSION and the undocumented -V flag

fix `make install' for AMUSED_RELEASE=No


initial commit