Unable to enable Pulseaudio Multicast/RTP receiver

[Axel]

Hello

I m using Fedora 12 and I m trying to enable the Multicast/RTP receiver 
of pulseaudio. In the preferences window of the padevchooser applet, 
under the Multicast/RTP tab, the checkboxes are disabled. A "Install" 
button is available. When I click on this button, a window tells me that 
the file /usr/lib/pulse-0.9.19/modules/module-rtp-recv.so is needed. 
When I try to continue, packagekit try to install the package 
pulseaudio-0.9.19-2.fc12.

Off course pulseaudio is already installed, and this process fails.

Here is the list of pulseaudio RPMs installed :

pulseaudio-gdm-hooks-0.9.21-2.fc12.i686
pulseaudio-utils-0.9.21-2.fc12.i686
pulseaudio-libs-0.9.21-2.fc12.i686
pulseaudio-libs-glib2-0.9.21-2.fc12.i686
pulseaudio-module-bluetooth-0.9.21-2.fc12.i686
pulseaudio-0.9.21-2.fc12.i686
pulseaudio-libs-zeroconf-0.9.21-2.fc12.i686
pulseaudio-module-gconf-0.9.21-2.fc12.i686
pulseaudio-libs-devel-0.9.21-2.fc12.i686
kde-settings-pulseaudio-4.3-15.1.noarch
pulseaudio-module-x11-0.9.21-2.fc12.i686
alsa-plugins-pulseaudio-1.0.21-2.fc12.i686
projectM-pulseaudio-1.2.0-5.fc12.i686

So, how can I solve this problem, or is there another way to enable the 
multicast rtp receiver ?

Thanks for your help
Axel