Ok I figured it out... sudo apt-get purge libreoffice*.*, then I manually downloaded the LibreOffice 3.4 deb package from their site. Then I sudo dpkg -i *.deb, in the DEB folder, then I installed desktop-intgration debian package inside of the DEBS folder. Now LibreOffice 3.4 is installed in Zorin OS 3.1... LibreOffice 3.4 has not been deemed worthy of being added to the official PPA so this is why it has not been updated, although the PPA has also not been updated to LibreOffice 3.3.4, for some reason Zorin's software center is so outdated that im not sure what is going on.
Firefox 6.0 was a whole different story, I added the mozillateam/firefox-stable ppa and ran sudo apt-get dist-upgrade which whatever that means updated Zorin's super outdated version of Firefox from 3.6.20 to 6.0... Zorin needs to figure out what is up with this non-sense...