[MPlayer-users] Build of mplayer frm svn fails to configure with GUI

[JD]

$ ./configure --prefix=/usr --enable-gui --enable-menu --enable-xmms 
--with-vidix-drivers=radeon --enable-dhahelper --enable-svgalib_helper 
--enable-xvmc --enable-dynamic-plugins --enable-smb --enable-nemesi 
--enable-libnut --enable-alsa --enable-libavutil_a --enable-libavutil_so 
--enable-libavcodec_a --enable-libavcodec_so
.
.
.
Error: The GUI requires libavcodec with PNG support (needs zlib).


I have these libs in /usr/lib
/usr/lib/libavcodec.so.52.20.0
/usr/lib/libavformat.so.52.31.0

They got installed when I installed ffmpeg:
$ rpm -q ffmpeg
ffmpeg-0.5-2.fc11.i586

So, how do I uninstall my ffmpeg, and install an ffmpeg rpm that has PNG 
support?
PS: I am on fc11 (i586).