diff --git a/platypush/plugins/sound/plugin.py b/platypush/plugins/sound/plugin.py
index 930465ba..f730fbc0 100644
--- a/platypush/plugins/sound/plugin.py
+++ b/platypush/plugins/sound/plugin.py
@@ -581,6 +581,8 @@ class SoundPlugin(Plugin):
 
         for i, stream in streams.items():
             stream['playback_state'] = self.playback_state[i].name
+            if i in self.stream_mixes:
+                stream['mix'] = list(self.stream_mixes[i])
 
         return streams