diff --git a/homeassistant/components/squeezebox/media_player.py b/homeassistant/components/squeezebox/media_player.py
index a3cc2120751..bd1f29f4e69 100644
--- a/homeassistant/components/squeezebox/media_player.py
+++ b/homeassistant/components/squeezebox/media_player.py
@@ -238,6 +238,7 @@ class SqueezeBoxEntity(MediaPlayerEntity):
         | MediaPlayerEntityFeature.SHUFFLE_SET
         | MediaPlayerEntityFeature.CLEAR_PLAYLIST
         | MediaPlayerEntityFeature.STOP
+        | MediaPlayerEntityFeature.GROUPING
     )
 
     def __init__(self, player):
@@ -393,7 +394,7 @@ class SqueezeBoxEntity(MediaPlayerEntity):
         return self._player.shuffle == "song"
 
     @property
-    def sync_group(self):
+    def group_members(self):
         """List players we are synced with."""
         player_ids = {
             p.unique_id: p.entity_id for p in self.hass.data[DOMAIN][KNOWN_PLAYERS]
@@ -404,6 +405,11 @@ class SqueezeBoxEntity(MediaPlayerEntity):
                 sync_group.append(player_ids[player])
         return sync_group
 
+    @property
+    def sync_group(self):
+        """List players we are synced with. Deprecated."""
+        return self.group_members
+
     @property
     def query_result(self):
         """Return the result from the call_query service."""
@@ -560,9 +566,9 @@ class SqueezeBoxEntity(MediaPlayerEntity):
         self._query_result = await self._player.async_query(*all_params)
         _LOGGER.debug("call_query got result %s", self._query_result)
 
-    async def async_sync(self, other_player):
+    async def async_join_players(self, group_members):
         """
-        Add another Squeezebox player to this player's sync group.
+        Add other Squeezebox players to this player's sync group.
 
         If the other player is a member of a sync group, it will leave the current sync group
         without asking.
@@ -570,15 +576,33 @@ class SqueezeBoxEntity(MediaPlayerEntity):
         player_ids = {
             p.entity_id: p.unique_id for p in self.hass.data[DOMAIN][KNOWN_PLAYERS]
         }
-        if other_player_id := player_ids.get(other_player):
-            await self._player.async_sync(other_player_id)
-        else:
-            _LOGGER.info("Could not find player_id for %s. Not syncing", other_player)
 
-    async def async_unsync(self):
+        for other_player in group_members:
+            if other_player_id := player_ids.get(other_player):
+                await self._player.async_sync(other_player_id)
+            else:
+                _LOGGER.info(
+                    "Could not find player_id for %s. Not syncing", other_player
+                )
+
+    async def async_sync(self, other_player):
+        """Sync this Squeezebox player to another. Deprecated."""
+        _LOGGER.warning(
+            "Service squeezebox.sync is deprecated; use media_player.join_players instead"
+        )
+        await self.async_join_players([other_player])
+
+    async def async_unjoin_player(self):
         """Unsync this Squeezebox player."""
         await self._player.async_unsync()
 
+    async def async_unsync(self):
+        """Unsync this Squeezebox player. Deprecated."""
+        _LOGGER.warning(
+            "Service squeezebox.unsync is deprecated; use media_player.unjoin_player instead"
+        )
+        await self.async_unjoin_player()
+
     async def async_browse_media(self, media_content_type=None, media_content_id=None):
         """Implement the websocket media browsing helper."""
         _LOGGER.debug(