business_kid is correct
for RHEL you can use multimedia
And i do mean be EXTRA CAREFUL !!!
INSTALL AND CONFIGURE!!!!!
the yum plugin "yum-priorities"
RPMForge IS INCOMPATIBLE with RHN !!!
if you are NOT EXTRA CAREFUL you will FUBAR the RHEL6 install !!!!
see the red hat documents or
search the red hat knowledge base for installing "yum-priorities"
and for CONFIGURING IT
( you will need to login to the red hat site with the user credentials you set up with the required license)
if you still feel like you want to use RPMForge ??????
with all the WARNINGS
all the multimedia plugins are there
the gstreammer ( good.bad.and ugly)
but if you installed the mplayer program from the mplayer.hqq website
there is a set of mplayer ONLY codecs
they need to be manually installed
now they are a tad out of date
they go in /usr/lib/codecs and /usr/lib/win32
also is Bzip2 installed on your RHEL6 server ?
the README is a bit old
mplayer no longer is looking for "/usr/local/lib/codecs/"
and it is a bit "iffy" if /usr/lib/win32 is needed , it might not be needed
It depends on if the xine version you install is looking there or not