Oracle Linux 6.5 MPEG 4 AAC DECODER FOR PLAYING MOVIE PLAYER RPM

for x64:
yum install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

for x86:
yum install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.i686.rpm

Then:
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

For instance:

yum install http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
yum search mpg

mpg123-devel.x86_64 : Header files, libraries and development documentation for mpg123.
perl-Audio-Play-MPG123.noarch : Frontend to mpg123
mpg123.x86_64 : MPEG audio player
mpgtx.x86_64 : MPEG ToolboX

If anyone's looking for future updates: AdditionalResources/Repositories/RPMForge - CentOS Wiki or RepoForge Project