enable ffplay on mesh clients

src/freedombone-app-tox

     tar xvjf ffmpeg-${FFMPEG_VERSION}.tar.bz2
     chroot ${rootdir} /bin/bash -x <<EOF
 cd ${INSTALL_DIR}/ffmpeg-${FFMPEG_VERSION}
-./configure --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enable-shared --enable-pthreads --enable-libopenjpeg
+./configure --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enable-shared --enable-pthreads --enable-libopenjpeg --enable-ffplay
 make
 make install
 EOF