I've started work on a Firefly media server settings add-in for WHS, it's not massively functional, but it mirrors the current functions of the system tray applet.
If anyone would like to take a look and offer any feedback have a read here for details.
http://forums.fireflymediaserver.org/viewtopic.php?t=6782 Currently there is not much error checking, so please make sure you have Firefly media server installed first, before installing this WHS add-in
Thanks for taking a look,
Nic