Fiddle with org-file-apps a little

config.org

@@ -144,12 +144,15 @@ needs to be set up to install them if they aren't already.
               "xelatex -shell-escape -interaction nonstopmode -output-directory %o %f"))
 	#+end_src
 
-	Also, I don't like Emacs' built-in PDF viewer, so open PDFs in Evince instead:
+
+
+** Default Applications
+   It's all fun and games until =C-c C-e h o= opens the source code.
 
    #+begin_src emacs-lisp
-      (eval-after-load "org"
+     (setq org-file-apps
-        '(progn
+           '(("html" . "firefox %s")
-           (setcdr (assoc "\\.pdf\\'" org-file-apps) "evince %s")))
+             (auto-mode . emacs)))
    #+end_src
 
 * Start up