Created attachment 335770 [details] build.log fails to compile with new libcdio. no emerge --info since this is clearly caused by the API change.
=gst-plugins-cdio-1.0.3 built fine. maybe you can steal a patch from there.
found this, you might find it useful: https://projects.archlinux.org/svntogit/packages.git/tree/trunk/cdio-cd-text-api.patch?h=packages/gstreamer0.10-ugly
applied in tree