In order to satisfy runtime multilib setups we tag anything that drops a library file in (/usr/)lib(64)/ as being multilib. pulseaudio currently drops a library in /usr/lib64/libpulse.so.0.3.0 for example. If this library (which I'm told is purely for internal pulseaudio use) is moved to libdir/pulseaudio/ it would avoid being tagged for multilib and we would resolve the current conflicts we have.
As discussed on IRC, moving libpulsecore to some private directory doesn't really work because the library is then no longer found by the dynamic loader. This could be worked around by -rpath or /etc/ld.so.conf/, both of which are not allowed on other distributions, and I'd be very unhappy if I'd have to ship PA with different build systems for Fedora and the rest. Instead I now split off libpulsecore into its own package pulseaudio-core-libs, which should fix the problem, too. 0.16.svn20071017