diff --git a/custom_components/vinx/media_player.py b/custom_components/vinx/media_player.py
index b887885..b7d53e3 100644
--- a/custom_components/vinx/media_player.py
+++ b/custom_components/vinx/media_player.py
@@ -85,10 +85,11 @@ def __init__(self, lw3: LW3, device_information: DeviceInformation) -> None:
     _attr_supported_features = MediaPlayerEntityFeature.SELECT_SOURCE
 
     async def async_update(self):
-        # Populate the source list only once
+        # Populate the source list only once. Sort it alphabetically, since the order of discovered devices
+        # may differ from device to device.
         if self._source_list is None:
             await self.populate_source_bidict()
-            self._source_list = list(self._source_bidict.values())
+            self._source_list = sorted(list(self._source_bidict.values()))
             _LOGGER.info(f"{self.name} source list populated with {len(self._source_list)} sources")
 
         async with self._lw3.connection():