did you buy the teck support and for the software updates ?
if not then you might want to look into using CentOS 5.3
it is the community SUPPORTED RHEL 5.3
you might also want to look at the Cent wiki for adding it's repos to the UNSUPPORTED RHEL5 if you did not buy the updates from redhat.
for mp3 's and other media see
If you paid for the redhat updates and for the teck support then call red hat .