At least the replay-gain support in banshee requires gstreamer-plugins-good. Banshee basicly works without it, but the option is shown in the GUI and just doesn't work as expected. I think the banshee package should pull in gstreamer-plugins-good.
I think this is a good idea.
Fedora Bugzappers volunteer triage team
Fixed in newest build in RAWHIDE. All consecutive updates for F13 and F12 will get the fix as well.