All I know...
I loaded the installation from the RH9 iso disks and tried to play my MP3's using the RPM'd xmms.
The result was a little message saying RH didnot support MP#'s due to legal issues (or something like that).
Justin Kelly mentioned having the same experience. It wasn't that they did no work, they did extra work. It IS patchable from what I hear. I'm addicted to Gentoo though.....