diff --git a/server/module-core/src/gst-plugins/kmsaudiomixer.c b/server/module-core/src/gst-plugins/kmsaudiomixer.c
index 9ef4589a5..79b2d1524 100644
--- a/server/module-core/src/gst-plugins/kmsaudiomixer.c
+++ b/server/module-core/src/gst-plugins/kmsaudiomixer.c
@@ -845,7 +845,7 @@ kms_audio_mixer_add_src_pad (KmsAudioMixer * self, const char *padname)
   // clang-format off
   g_object_set (adder,
       "latency", LATENCY * GST_MSECOND,
-      "start-time-selection", "first",
+      "start-time-selection", 1 , // "first"
       NULL);
   // clang-format on
   g_object_set (tee, "allow-not-linked", TRUE, NULL);
diff --git a/server/module-elements/tests/server/CMakeLists.txt b/server/module-elements/tests/server/CMakeLists.txt
index ee6c91b5c..3371cba41 100644
--- a/server/module-elements/tests/server/CMakeLists.txt
+++ b/server/module-elements/tests/server/CMakeLists.txt
@@ -114,3 +114,23 @@ target_link_libraries(test_player
   ${LIBRARY_NAME}impl
   ${KMSCORE_LIBRARIES}
 )
+
+add_test_program(test_composite composite.cpp)
+add_dependencies(test_composite kmselements)
+set_property(TARGET test_composite
+  PROPERTY INCLUDE_DIRECTORIES
+    ${KmsJsonRpc_INCLUDE_DIRS}
+    ${sigc++-2.0_INCLUDE_DIRS}
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/server/implementation/objects
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/server/implementation
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/server/interface
+    ${CMAKE_CURRENT_BINARY_DIR}/../../src/server/interface/generated-cpp
+    ${CMAKE_CURRENT_BINARY_DIR}/../../src/server/implementation/generated-cpp
+    ${KMSCORE_INCLUDE_DIRS}
+    ${gstreamer-1.0_INCLUDE_DIRS}
+)
+target_link_libraries(test_composite
+  ${LIBRARY_NAME}impl
+  ${KMSCORE_LIBRARIES}
+)
+
diff --git a/server/module-elements/tests/server/composite.cpp b/server/module-elements/tests/server/composite.cpp
new file mode 100644
index 000000000..e9f680e7a
--- /dev/null
+++ b/server/module-elements/tests/server/composite.cpp
@@ -0,0 +1,281 @@
+/*
+ * (C) Copyright 2016 Kurento (http://kurento.org/)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#define BOOST_TEST_STATIC_LINK
+#define BOOST_TEST_PROTECTED_VIRTUAL
+#define BOOST_TEST_IGNORE_NON_ZERO_CHILD_CODE // Don't fail if child process fails
+
+#include <boost/test/included/unit_test.hpp>
+#include <MediaPipelineImpl.hpp>
+#include <objects/CompositeImpl.hpp>
+#include <objects/HubPortImpl.hpp>
+#include <objects/PassThroughImpl.hpp>
+#include <MediaFlowInStateChanged.hpp>
+#include <MediaFlowState.hpp>
+#include <MediaType.hpp>
+#include <mutex>
+#include <condition_variable>
+#include <ModuleManager.hpp>
+#include <MediaSet.hpp>
+#include <GstreamerDotDetails.hpp>
+
+
+#define DIR_TEMPLATE "/tmp/recoder_test_XXXXXX"
+
+using namespace kurento;
+using namespace boost::unit_test;
+
+boost::property_tree::ptree config;
+std::string mediaPipelineId;
+ModuleManager moduleManager;
+
+#define EXPECTED_LEN 0.2
+static const int TIMEOUT = 5; /* seconds */
+
+struct GF {
+  GF();
+  ~GF();
+};
+
+BOOST_GLOBAL_FIXTURE (GF);
+
+GF::GF()
+{
+  boost::property_tree::ptree ac, audioCodecs, vc, videoCodecs;
+  gst_init(nullptr, nullptr);
+
+  moduleManager.loadModulesFromDirectories ("../../src/server:../../..");
+
+  mediaPipelineId = moduleManager.getFactory ("MediaPipeline")->createObject (
+                      config, "",
+                      Json::Value() )->getId();
+}
+
+GF::~GF()
+{
+  MediaSet::deleteMediaSet();
+}
+
+static std::shared_ptr <CompositeImpl>
+createComposite ()
+{
+  std::shared_ptr <kurento::MediaObjectImpl> composite;
+  Json::Value constructorParams;
+
+  constructorParams ["mediaPipeline"] = mediaPipelineId;
+
+  composite = moduleManager.getFactory ("Composite")->createObject (
+                       config, "",
+                       constructorParams );
+
+  return std::dynamic_pointer_cast <CompositeImpl> (composite);
+}
+
+static void
+releaseComposite (std::shared_ptr<CompositeImpl> &ep)
+{
+  std::string id = ep->getId();
+
+  ep.reset();
+  MediaSet::getMediaSet ()->release (id);
+}
+
+
+static std::shared_ptr <HubPortImpl>
+createHubPort (std::shared_ptr<CompositeImpl> composite)
+{
+  std::shared_ptr <kurento::MediaObjectImpl> port;
+  Json::Value constructorParams;
+
+  constructorParams ["hub"] = composite->getId();
+
+  port = moduleManager.getFactory ("HubPort")->createObject (
+                       config, "",
+                       constructorParams );
+
+  return std::dynamic_pointer_cast <HubPortImpl> (port);
+}
+
+static void
+releaseHubPort (std::shared_ptr<HubPortImpl> &ep)
+{
+  std::string id = ep->getId();
+
+  ep.reset();
+  MediaSet::getMediaSet ()->release (id);
+}
+
+
+static std::shared_ptr<MediaElementImpl> createTestSrc() {
+  std::shared_ptr <MediaElementImpl> src = std::dynamic_pointer_cast
+      <MediaElementImpl> (MediaSet::getMediaSet()->ref (new  MediaElementImpl (
+                            boost::property_tree::ptree(),
+                            MediaSet::getMediaSet()->getMediaObject (mediaPipelineId),
+                            "dummysrc") ) );
+
+  g_object_set (src->getGstreamerElement(), "audio", TRUE, "video", TRUE, NULL);
+
+  return std::dynamic_pointer_cast <MediaElementImpl> (src);
+}
+
+static void
+releaseTestSrc (std::shared_ptr<MediaElementImpl> &ep)
+{
+  std::string id = ep->getId();
+
+  ep.reset();
+  MediaSet::getMediaSet ()->release (id);
+}
+
+static void
+dumpPipeline (std::shared_ptr<MediaPipeline> pipeline, std::string fileName)
+{
+  std::string pipelineDot;
+  std::shared_ptr<GstreamerDotDetails> details (new GstreamerDotDetails ("SHOW_ALL"));
+
+  pipelineDot = pipeline->getGstreamerDot (details);
+  std::ofstream out(fileName);
+
+  out << pipelineDot;
+  out.close ();
+
+}
+
+void
+dumpPipeline (std::string pipelineId, std::string fileName)
+{
+  std::shared_ptr<MediaPipeline> pipeline = std::dynamic_pointer_cast<MediaPipeline> (MediaSet::getMediaSet ()->getMediaObject (pipelineId));
+  dumpPipeline (pipeline, fileName);
+
+//  MediaSet::getMediaSet ()->release (pipelineId);
+}
+
+static std::shared_ptr<MediaElementImpl> getMediaElement (std::shared_ptr<PassThroughImpl> element)
+{
+	return std::dynamic_pointer_cast<MediaElementImpl> (element);
+}
+
+
+static std::shared_ptr <PassThroughImpl>
+createPassThrough (std::string mediaPipelineId)
+{
+  std::shared_ptr <kurento::MediaObjectImpl> pt;
+  Json::Value constructorParams;
+
+  constructorParams ["mediaPipeline"] = mediaPipelineId;
+
+  pt = moduleManager.getFactory ("PassThrough")->createObject (
+                  config, "",
+                  constructorParams );
+
+  return std::dynamic_pointer_cast <PassThroughImpl> (pt);
+}
+
+static void
+releasePassTrhough (std::shared_ptr<PassThroughImpl> &ep)
+{
+  std::string id = ep->getId();
+
+  ep.reset();
+  MediaSet::getMediaSet ()->release (id);
+}
+
+
+
+static void
+composite_setup ()
+{
+  std::atomic<bool> media_state_changed (false);
+  std::condition_variable cv;
+  std::mutex mtx;
+  std::unique_lock<std::mutex> lck (mtx);
+  std::shared_ptr<CompositeImpl> composite = createComposite ();
+  std::shared_ptr<MediaElementImpl> src1 = createTestSrc();
+  std::shared_ptr<MediaElementImpl> src2 = createTestSrc();
+  std::shared_ptr<PassThroughImpl> pt = createPassThrough(mediaPipelineId);
+  std::shared_ptr<HubPortImpl> port1 = createHubPort (composite);
+  std::shared_ptr<HubPortImpl> port2 = createHubPort (composite);
+
+  bool audio_flowing = false;
+  bool video_flowing = false;
+
+  sigc::connection conn = getMediaElement(pt)->signalMediaFlowInStateChanged.connect([&] (
+		  MediaFlowInStateChanged event) {
+	  	  	  std::shared_ptr<MediaFlowState> state = event.getState();
+	  	  	  if (state->getValue() == MediaFlowState::FLOWING) {
+		  	  	  BOOST_CHECK (state->getValue() == MediaFlowState::FLOWING);
+                if (event.getMediaType ()->getValue() == MediaType::AUDIO) {
+                    BOOST_TEST_MESSAGE ("Audio flowing");
+                    audio_flowing = true;
+                } else if (event.getMediaType ()->getValue() == MediaType::VIDEO) {
+                    BOOST_TEST_MESSAGE ("Video flowing");
+                    video_flowing = true;
+                }
+      	  	  } else if (state->getValue() == MediaFlowState::NOT_FLOWING) {
+                if (event.getMediaType ()->getValue() == MediaType::AUDIO) {
+                    BOOST_TEST_MESSAGE ("Audio not flowing");
+                    audio_flowing = false;
+                } else if (event.getMediaType ()->getValue() == MediaType::VIDEO) {
+                    BOOST_TEST_MESSAGE ("Video not flowing");
+                    video_flowing = false;
+                }
+              }
+              if (audio_flowing && video_flowing) {
+		  	  	  media_state_changed = true; 
+		  	  	  cv.notify_one();
+              }
+          }
+  );
+
+  src1->connect (port1);
+  src2->connect (port2);
+  port1->connect (pt);
+
+
+  dumpPipeline (mediaPipelineId, "composite_start.dot");
+  // First stream
+  cv.wait_for (lck, std::chrono::seconds(10), [&] () {
+    return media_state_changed.load();
+  });
+  conn.disconnect ();
+
+  dumpPipeline (mediaPipelineId, "composite_end.dot");
+
+  if (!((getMediaElement(pt)->isMediaFlowingIn (std::make_shared<MediaType>(MediaType::AUDIO))) && ((getMediaElement(pt)->isMediaFlowingIn (std::make_shared<MediaType>(MediaType::VIDEO)))))) {
+    BOOST_ERROR ("Media is not flowing out from composite");
+  }
+
+ 
+
+  releasePassTrhough(pt);
+  releaseHubPort(port1);
+  releaseHubPort(port2);
+  releaseComposite (composite);
+  releaseTestSrc(src1);
+  releaseTestSrc(src2);
+
+}
+
+test_suite *
+init_unit_test_suite ( int , char *[] )
+{
+  test_suite *test = BOOST_TEST_SUITE ( "RecorderEndpoint" );
+
+  test->add (BOOST_TEST_CASE ( &composite_setup), 0, /* timeout */ 100);
+
+  return test;
+}