fix tracks serialization

api/funkwhale_api/radios/views.py

@@ -53,7 +53,7 @@ class RadioViewSet(
     @action(methods=["get"], detail=True, serializer_class=TrackSerializer)
     def tracks(self, request, *args, **kwargs):
         radio = self.get_object()
-        tracks = radio.get_candidates()
+        tracks = radio.get_candidates().for_nested_serialization()
         tracks_without_upload = tracks.filter(uploads__isnull=True)
         actor = music_utils.get_actor_from_request(self.request)
         tracks = tracks.with_playable_uploads(actor)