SWareT should upgrade everything fine. You'll need to set VERSION to current in /etc/swaret.conf and run 'swaret --update'. Then run 'swaret --upgrade -a' a couple times (
search LQ for why) and you'll be cool. You should really check out the
Slackware ChangeLog and make sure to manually install the new packages (udev) and upgrade the replaced packages (oggutils split into about four different packages).