Problem with installing mplayer

[Paul Smith]

Dear All

I am trying to install mplayer, but I get the following error when
installing it with yum:

Transaction Check Error:   file /usr/lib/libpostproc.so.0.0.1
conflicts between attempted installs of
libpostproc-1.0-0.16.pre7.2.fc4 and ffmpeg-0.4.9-0.lvn.0.18.20050801.4

Any advice how to overcome this problem?

Thanks in advance,

Paul