cd /opt/local/var/macports/sources/rsync.macports.org/release/ports/multimedia/ffmpeg

vi PortFile

7 configure.cflags-append DHAVE_LRINTF ${configure.cppflags}
78 configure.args \
79 —disable-vhook \
80 —enable-gpl \
81 —enable-postproc \
82 —enable-swscale —enable-avfilter —enable-avfilter-lavf \
83 —enable-libmp3lame \
84 —enable-libvorbis \
85 —enable-libtheora \
86 —enable-libdirac —enable-libschroedinger \
87 —enable-libfaac \
88 —enable-libfaad \
89 —enable-libxvid \
90 —enable-libx264 \
91 —mandir=${prefix}/share/man \
92 —enable-pthreads \
93 —enable-nonfree \
94 —enable-libamr-nb —enable-libamr-wb \
95 —cc=gcc-4.0
96 #-disable-mmx \

http://www.penguin.cz/~utx/amr
get libamrnb and libamrwb

downgrading lame to 3.97