diff --git a/openlp/core/ui/advancedtab.py b/openlp/core/ui/advancedtab.py
index adc93fd19..32179281b 100644
--- a/openlp/core/ui/advancedtab.py
+++ b/openlp/core/ui/advancedtab.py
@@ -480,6 +480,9 @@ class AdvancedTab(SettingsTab):
             # Default to False on Gnome.
             x11_bypass_default = bool(not
                 os.environ.get(u'GNOME_DESKTOP_SESSION_ID'))
+            # Default to False on XFce
+            if os.environ.get(u'DESKTOP_SESSION') == u'xfce':
+                x11_bypass_default = False
         self.x11BypassCheckBox.setChecked(
             settings.value(u'x11 bypass wm', x11_bypass_default))
         self.defaultColor = settings.value(u'default color', u'#ffffff')
diff --git a/openlp/core/ui/maindisplay.py b/openlp/core/ui/maindisplay.py
index 7193ad024..2f5b98edc 100644
--- a/openlp/core/ui/maindisplay.py
+++ b/openlp/core/ui/maindisplay.py
@@ -142,6 +142,9 @@ class MainDisplay(Display):
             # Default to False on Gnome.
             x11_bypass_default = bool(not
                 os.environ.get(u'GNOME_DESKTOP_SESSION_ID'))
+            # Default to False on XFce
+            if os.environ.get(u'DESKTOP_SESSION') == u'xfce':
+                x11_bypass_default = False
         if Settings().value(u'advanced/x11 bypass wm', x11_bypass_default):
             windowFlags |= QtCore.Qt.X11BypassWindowManagerHint
         # TODO: The following combination of windowFlags works correctly
diff --git a/openlp/plugins/custom/forms/editcustomdialog.py b/openlp/plugins/custom/forms/editcustomdialog.py
index d1f2f4e8e..5b4deff44 100644
--- a/openlp/plugins/custom/forms/editcustomdialog.py
+++ b/openlp/plugins/custom/forms/editcustomdialog.py
@@ -74,9 +74,9 @@ class Ui_CustomEditDialog(object):
         self.buttonLayout.addWidget(self.deleteButton)
         self.buttonLayout.addStretch()
         self.upButton = create_button(customEditDialog, u'upButton', role=u'up',
-            enable=False, click=customEditDialog.onUpButtonClicked)
+            enabled=False, click=customEditDialog.onUpButtonClicked)
         self.downButton = create_button(customEditDialog, u'downButton',
-            role=u'down', enable=False,
+            role=u'down', enabled=False,
             click=customEditDialog.onDownButtonClicked)
         self.buttonLayout.addWidget(self.upButton)
         self.buttonLayout.addWidget(self.downButton)
diff --git a/openlp/plugins/songs/forms/songexportform.py b/openlp/plugins/songs/forms/songexportform.py
index 450849e2c..e41529f64 100644
--- a/openlp/plugins/songs/forms/songexportform.py
+++ b/openlp/plugins/songs/forms/songexportform.py
@@ -34,11 +34,11 @@ import logging
 
 from PyQt4 import QtCore, QtGui
 
-from openlp.core.lib import build_icon, Receiver, SettingsManager, translate, \
+from openlp.core.lib import build_icon, Receiver, translate, \
     create_separated_list
 from openlp.core.lib.ui import UiStrings, critical_error_message_box
 from openlp.core.ui.wizard import OpenLPWizard, WizardStrings
-from openlp.core.utils import locale_direct_compare
+from openlp.plugins.songs.lib import natcmp
 from openlp.plugins.songs.lib.db import Song
 from openlp.plugins.songs.lib.openlyricsexport import OpenLyricsExport
 
@@ -252,8 +252,7 @@ class SongExportForm(OpenLPWizard):
         # Load the list of songs.
         Receiver.send_message(u'cursor_busy')
         songs = self.plugin.manager.get_all_objects(Song)
-        songs.sort(
-            cmp=locale_direct_compare, key=lambda song: song.sort_string)
+        songs.sort(cmp=natcmp, key=lambda song: song.sort_key)
         for song in songs:
             # No need to export temporary songs.
             if song.temporary:
diff --git a/openlp/plugins/songs/lib/__init__.py b/openlp/plugins/songs/lib/__init__.py
index bb68cb3ec..0d4b523ae 100644
--- a/openlp/plugins/songs/lib/__init__.py
+++ b/openlp/plugins/songs/lib/__init__.py
@@ -28,10 +28,10 @@
 ###############################################################################
 import re
 
-from PyQt4 import QtGui
+from PyQt4 import QtGui, QtCore
 
 from openlp.core.lib import translate
-from openlp.core.utils import CONTROL_CHARS
+from openlp.core.utils import CONTROL_CHARS, locale_direct_compare
 from db import Author
 from ui import SongStrings
 
@@ -594,6 +594,40 @@ def strip_rtf(text, default_encoding=None):
     text = u''.join(out)
     return text, default_encoding
 
+def natcmp(a, b):
+    """
+    Natural string comparison which mimics the behaviour of Python's internal
+    cmp function.
+    """
+    if len(a) <= len(b):
+        for i, key in enumerate(a):
+            if isinstance(key, int) and isinstance(b[i], int):
+                result = cmp(key, b[i])
+            elif isinstance(key, int) and not isinstance(b[i], int):
+                result = locale_direct_compare(QtCore.QString(str(key)), b[i])
+            elif not isinstance(key, int) and isinstance(b[i], int):
+                result = locale_direct_compare(key, QtCore.QString(str(b[i])))
+            else:
+                result = locale_direct_compare(key, b[i])
+            if result != 0:
+                return result
+        if len(a) == len(b):
+            return 0
+        else:
+            return -1
+    else:
+        for i, key in enumerate(b):
+            if isinstance(a[i], int) and isinstance(key, int):
+                result = cmp(a[i], key)
+            elif isinstance(a[i], int) and not isinstance(key, int):
+                result = locale_direct_compare(QtCore.QString(str(a[i])), key)
+            elif not isinstance(a[i], int) and isinstance(key, int):
+                result = locale_direct_compare(a[i], QtCore.QString(str(key)))
+            else:
+                result = locale_direct_compare(a[i], key)
+            if result != 0:
+                return result
+        return 1
 
 from xml import OpenLyrics, SongXML
 from songstab import SongsTab
diff --git a/openlp/plugins/songs/lib/mediaitem.py b/openlp/plugins/songs/lib/mediaitem.py
index a6419de20..fd927223d 100644
--- a/openlp/plugins/songs/lib/mediaitem.py
+++ b/openlp/plugins/songs/lib/mediaitem.py
@@ -39,54 +39,17 @@ from openlp.core.lib import MediaManagerItem, Receiver, ItemCapabilities, \
     translate, check_item_selected, PluginStatus, create_separated_list, \
     check_directory_exists, ServiceItemContext, Settings
 from openlp.core.lib.ui import UiStrings, create_widget_action
-from openlp.core.utils import AppLocation, locale_direct_compare
+from openlp.core.utils import AppLocation
 from openlp.plugins.songs.forms import EditSongForm, SongMaintenanceForm, \
     SongImportForm, SongExportForm
 from openlp.plugins.songs.lib import OpenLyrics, SongXML, VerseType, \
-    clean_string
+    clean_string, natcmp
 from openlp.plugins.songs.lib.db import Author, Song, Book, MediaFile
 from openlp.plugins.songs.lib.ui import SongStrings
 
 log = logging.getLogger(__name__)
 
 
-def natcmp(a, b):
-    """
-    Natural string comparison which mimics the behaviour of Python's internal
-    cmp function.
-    """
-    log.debug('a: %s; b: %s', a, b)
-    if len(a) <= len(b):
-        for i, key in enumerate(a):
-            if isinstance(key, int) and isinstance(b[i], int):
-                result = cmp(key, b[i])
-            elif isinstance(key, int) and not isinstance(b[i], int):
-                result = locale_direct_compare(str(key), b[i])
-            elif not isinstance(key, int) and isinstance(b[i], int):
-                result = locale_direct_compare(key, str(b[i]))
-            else:
-                result = locale_direct_compare(key, b[i])
-            if result != 0:
-                return result
-        if len(a) == len(b):
-            return 0
-        else:
-            return -1
-    else:
-        for i, key in enumerate(b):
-            if isinstance(a[i], int) and isinstance(key, int):
-                result = cmp(a[i], key)
-            elif isinstance(a[i], int) and not isinstance(key, int):
-                result = locale_direct_compare(str(a[i]), key)
-            elif not isinstance(a[i], int) and isinstance(key, int):
-                result = locale_direct_compare(a[i], str(key))
-            else:
-                result = locale_direct_compare(a[i], key)
-            if result != 0:
-                return result
-        return 1
-
-
 class SongSearch(object):
     """
     An enumeration for song search methods.