create EpisodeSound & adapt; update list editors

aircox_streamer/controllers/monitor.py

@@ -198,7 +198,7 @@ class Monitor:
             Diffusion.objects.station(self.station)
             .on_air()
             .now(now)
-            .filter(episode__sound__type=Sound.TYPE_ARCHIVE)
+            .filter(episode__episodesound__broadcast=True)
             .first()
         )
         # Can't use delay: diffusion may start later than its assigned start.
@@ -227,7 +227,7 @@ class Monitor:
         return log
 
     def start_diff(self, source, diff):
-        playlist = Sound.objects.episode(id=diff.episode_id).playlist()
+        playlist = diff.episode.episodesound_set.all().broadcast().playlist()
         source.push(*playlist)
         self.log(
             type=Log.TYPE_START,