I don't fully understand what is happening so if I explain the problem wrong plz excuse me. When ogle is merged it puts some libs and stuff in '/usr/lib/ogle/'. The file /usr/lib/ogle/libdvdcontrol.la seems to have info on how programs are to link to it. In that file you'll find two file paths to '/var/tmp/portage/ogle-0.8.2-r2/work/ogle-0.8.2/ogle'. This is the compile location but it's not where the ogle files are still located. When I chaged those paths to '/usr/lib/ogle' the emerge of ogle-gui works.
Fix checked in... I unmerged and remerged both ogle and ogle-gui and watched a movie... Please file another bug if you find a problem... BTW for those who care: The upstream package has a broke configure script and Makefile system. libdvdcontrol does not get installed if you use DESTDIR trick and don't install directly to the directory specified with ./configure --prefix. I've tried fixing the makefiles but they are an autogenerated mess.