I'm not sure where to place this feature request, but rawhide seems the most logical spot. I don't know of another program currently in rawhide that supports multimedia keyboards, so I thought I'd suggest xbindkeys. I've been using xbindkeys for a while to make my extra set of multimedia keys on my keyboard somewhat functional, not as functional as adding a new xkeyboard map specific to my keyboard...but definitely much easier to setup. http://hocwp.free.fr/xbindkeys/xbindkeys.html it even has a gtk based gui config tool. http://www.netchampagne.com/xbindkeys_config/
I've wanted to do get people's extra keyboard buttons to work for some time now, but the UI for XBindKeys looks overly complicated. So there's two parts to the problem. One is getting the keyboard properly configured so that the OS gets signals from these extra keys. That should be the job of redhat-config-keyboard. The other part is associating actions with those extra keys. It seems to me that the place to do that is the gnome-keybinding-properties. I'll change the component of this report to redhat-config-keyboard since we plan on removing kbdconfig in the next release.
Deferring since this isn't going to happen for this release.