diff --git a/mopidy/backends/local/__init__.py b/mopidy/backends/local/__init__.py
index 58cb405d..2fa96dab 100644
--- a/mopidy/backends/local/__init__.py
+++ b/mopidy/backends/local/__init__.py
@@ -52,7 +52,7 @@ class LocalBackend(ThreadingActor, Backend):
 
         self.output = None
 
-    def pre_start(self):
+    def on_start(self):
         output_refs = ActorRegistry.get_by_class(BaseOutput)
         assert len(output_refs) == 1, 'Expected exactly one running output.'
         self.output = output_refs[0].proxy()
diff --git a/mopidy/backends/spotify/__init__.py b/mopidy/backends/spotify/__init__.py
index 9f2cd99f..1ac5f0be 100644
--- a/mopidy/backends/spotify/__init__.py
+++ b/mopidy/backends/spotify/__init__.py
@@ -66,7 +66,7 @@ class SpotifyBackend(ThreadingActor, Backend):
         self.output = None
         self.spotify = None
 
-    def pre_start(self):
+    def on_start(self):
         output_refs = ActorRegistry.get_by_class(BaseOutput)
         assert len(output_refs) == 1, 'Expected exactly one running output.'
         self.output = output_refs[0].proxy()
diff --git a/mopidy/frontends/lastfm.py b/mopidy/frontends/lastfm.py
index 8d6cf2a8..04716c61 100644
--- a/mopidy/frontends/lastfm.py
+++ b/mopidy/frontends/lastfm.py
@@ -40,7 +40,7 @@ class LastfmFrontend(ThreadingActor, BaseFrontend):
         self.lastfm = None
         self.last_start_time = None
 
-    def pre_start(self):
+    def on_start(self):
         try:
             username = settings.LASTFM_USERNAME
             password_hash = pylast.md5(settings.LASTFM_PASSWORD)
@@ -57,7 +57,7 @@ class LastfmFrontend(ThreadingActor, BaseFrontend):
             logger.error(u'Error during Last.fm setup: %s', e)
             self.stop()
 
-    def react(self, message):
+    def on_receive(self, message):
         if message.get('command') == 'started_playing':
             self.started_playing(message['track'])
         elif message.get('command') == 'stopped_playing':
diff --git a/mopidy/frontends/mpd/__init__.py b/mopidy/frontends/mpd/__init__.py
index 6c39a09b..24c21c38 100644
--- a/mopidy/frontends/mpd/__init__.py
+++ b/mopidy/frontends/mpd/__init__.py
@@ -23,11 +23,11 @@ class MpdFrontend(ThreadingActor, BaseFrontend):
     def __init__(self):
         self._thread = None
 
-    def pre_start(self):
+    def on_start(self):
         self._thread = MpdThread()
         self._thread.start()
 
-    def react(self, message):
+    def on_receive(self, message):
         pass # Ignore any messages
 
 
diff --git a/mopidy/mixers/alsa.py b/mopidy/mixers/alsa.py
index a7f5431e..6329bbbb 100644
--- a/mopidy/mixers/alsa.py
+++ b/mopidy/mixers/alsa.py
@@ -25,7 +25,7 @@ class AlsaMixer(ThreadingActor, BaseMixer):
     def __init__(self):
         self._mixer = None
 
-    def pre_start(self):
+    def on_start(self):
         self._mixer = alsaaudio.Mixer(self._get_mixer_control())
         assert self._mixer is not None
 
diff --git a/mopidy/mixers/denon.py b/mopidy/mixers/denon.py
index 966f804a..3922d20a 100644
--- a/mopidy/mixers/denon.py
+++ b/mopidy/mixers/denon.py
@@ -30,7 +30,7 @@ class DenonMixer(ThreadingActor, BaseMixer):
         self._levels = ['99'] + ["%(#)02d" % {'#': v} for v in range(0, 99)]
         self._volume = 0
 
-    def pre_start(self):
+    def on_start(self):
         if self._device is None:
             from serial import Serial
             self._device = Serial(port=settings.MIXER_EXT_PORT, timeout=0.2)
diff --git a/mopidy/mixers/gstreamer_software.py b/mopidy/mixers/gstreamer_software.py
index b93e1b52..d6365b4b 100644
--- a/mopidy/mixers/gstreamer_software.py
+++ b/mopidy/mixers/gstreamer_software.py
@@ -10,7 +10,7 @@ class GStreamerSoftwareMixer(ThreadingActor, BaseMixer):
     def __init__(self):
         self.output = None
 
-    def pre_start(self):
+    def on_start(self):
         output_refs = ActorRegistry.get_by_class(BaseOutput)
         assert len(output_refs) == 1, 'Expected exactly one running output.'
         self.output = output_refs[0].proxy()
diff --git a/mopidy/mixers/nad.py b/mopidy/mixers/nad.py
index db4b40c1..bd53376e 100644
--- a/mopidy/mixers/nad.py
+++ b/mopidy/mixers/nad.py
@@ -73,7 +73,7 @@ class NadTalker(ThreadingActor):
     def __init__(self):
         self._device = None
 
-    def pre_start(self):
+    def on_start(self):
         self._open_connection()
         self._set_device_to_known_state()
 
diff --git a/mopidy/outputs/gstreamer.py b/mopidy/outputs/gstreamer.py
index 37bfb35c..0596addb 100644
--- a/mopidy/outputs/gstreamer.py
+++ b/mopidy/outputs/gstreamer.py
@@ -26,7 +26,7 @@ class GStreamerOutput(ThreadingActor, BaseOutput):
     def __init__(self):
         self.gst_pipeline = None
 
-    def pre_start(self):
+    def on_start(self):
         self._setup_gstreamer()
 
     def _setup_gstreamer(self):
diff --git a/tests/outputs/gstreamer_test.py b/tests/outputs/gstreamer_test.py
index 4e101319..d2e3c263 100644
--- a/tests/outputs/gstreamer_test.py
+++ b/tests/outputs/gstreamer_test.py
@@ -19,7 +19,7 @@ class GStreamerOutputTest(unittest.TestCase):
         settings.BACKENDS = ('mopidy.backends.local.LocalBackend',)
         self.song_uri = path_to_uri(data_folder('song1.wav'))
         self.output = GStreamerOutput()
-        self.output.pre_start()
+        self.output.on_start()
 
     def tearDown(self):
         settings.runtime.clear()