diff --git a/ImGuiVisitor.cpp b/ImGuiVisitor.cpp
index 0f2cb35..b45ccaa 100644
--- a/ImGuiVisitor.cpp
+++ b/ImGuiVisitor.cpp
@@ -69,7 +69,12 @@ void ImGuiVisitor::visit(Group &n)
 
 void ImGuiVisitor::visit(Switch &n)
 {
+    // TODO : display selection of active child
+}
 
+void ImGuiVisitor::visit(Animation &n)
+{
+    // TODO : display group and animation parameters
 }
 
 void ImGuiVisitor::visit(Primitive &n)
@@ -82,9 +87,9 @@ void ImGuiVisitor::visit(Primitive &n)
     ImGui::PopID();
 }
 
-void ImGuiVisitor::visit(ImageSurface &n)
+void ImGuiVisitor::visit(FrameBufferSurface &n)
 {
-
+    ImGui::Text("Framebuffer");
 }
 
 void ImGuiVisitor::visit(MediaSurface &n)
@@ -127,26 +132,6 @@ void ImGuiVisitor::visit(ImageShader &n)
     ImGui::PopID();
 }
 
-void ImGuiVisitor::visit(LineStrip &n)
-{
-    ImGui::Text("Lines");
-}
-
-void ImGuiVisitor::visit(LineSquare &n)
-{
-    ImGui::Text("Square");
-}
-
-void ImGuiVisitor::visit(LineCircle &n)
-{
-    ImGui::Text("Circle");
-}
-
-void ImGuiVisitor::visit(Mesh &n)
-{
-    ImGui::Text("Mesh");
-}
-
 void ImGuiVisitor::visit(Scene &n)
 {
     ImGui::SetNextItemOpen(true, ImGuiCond_Once);
diff --git a/ImGuiVisitor.h b/ImGuiVisitor.h
index 806e0fe..d26ba4b 100644
--- a/ImGuiVisitor.h
+++ b/ImGuiVisitor.h
@@ -9,22 +9,24 @@ public:
     ImGuiVisitor();
 
     // Elements of Scene
-    void visit(Scene& n) override;
-    void visit(Node& n) override;
-    void visit(Group& n) override;
-    void visit(Switch& n) override;
-    void visit(Primitive& n) override;
-    void visit(ImageSurface& n) override;
-    void visit(MediaSurface& n) override;
-    void visit(LineStrip& n) override;
-    void visit(LineSquare& n) override;
-    void visit(LineCircle& n) override;
-    void visit(Mesh& n) override;
+    void visit(Scene& n);
+    void visit(Node& n);
+    void visit(Group& n);
+    void visit(Switch& n);
+    void visit(Animation& n);
+    void visit(Primitive& n);
+    void visit(ImageSurface&) {}
+    void visit(MediaSurface& n);
+    void visit(FrameBufferSurface& n);
+    void visit(LineStrip&) {}
+    void visit(LineSquare&) {}
+    void visit(LineCircle&) {}
+    void visit(Mesh&) {}
 
     // Elements with attributes
-    void visit(MediaPlayer& n) override;
-    void visit(Shader& n) override;
-    void visit(ImageShader& n) override;
+    void visit(MediaPlayer& n);
+    void visit(Shader& n);
+    void visit(ImageShader& n);
 };
 
 #endif // IMGUIVISITOR_H
diff --git a/Mixer.cpp b/Mixer.cpp
index 10e380d..508ef6a 100644
--- a/Mixer.cpp
+++ b/Mixer.cpp
@@ -21,7 +21,7 @@ void Mixer::update()
     if (update_time_ == GST_CLOCK_TIME_NONE)
         update_time_ = gst_util_get_timestamp ();
     gint64 current_time = gst_util_get_timestamp ();
-    gint64 dt = current_time - update_time_;
+    float dt = static_cast<float>( GST_TIME_AS_MSECONDS(current_time - update_time_) ) * 0.001f;
     update_time_ = current_time;
 
     // render of all sources
@@ -29,8 +29,9 @@ void Mixer::update()
         (*it)->render();
     }
 
-    // recursive update of all views
-    mixing_.update( static_cast<float>( GST_TIME_AS_MSECONDS(dt)) * 0.001f );
+    // recursive update of ALL views
+    render_.update(dt);
+    mixing_.update(dt);
     // TODO other views
 
 
@@ -49,6 +50,15 @@ void Mixer::draw()
 // manangement of sources
 void Mixer::createSourceMedia(std::string uri)
 {
+    // create source
+    MediaSource *m = new MediaSource("s", uri);
+
+    // add Nodes to ALL views
+    //
+    // Render Node
+    render_.scene.root()->addChild(m->group(View::RENDERING));
+    // Mixing Node
+    mixing_.scene.root()->addChild(m->group(View::MIXING));
 
 }
 
@@ -72,10 +82,10 @@ Source *Mixer::currentSource()
 }
 
 // management of view
-void Mixer::setCurrentView(viewMode m)
+void Mixer::setCurrentView(View::Mode m)
 {
     switch (m) {
-    case MIXING:
+    case View::MIXING:
         current_view_ = &mixing_;
         break;
     default:
@@ -84,12 +94,12 @@ void Mixer::setCurrentView(viewMode m)
     }
 }
 
-View *Mixer::getView(viewMode m)
+View *Mixer::getView(View::Mode m)
 {
     switch (m) {
-    case RENDERING:
+    case View::RENDERING:
         return &render_;
-    case MIXING:
+    case View::MIXING:
         return &mixing_;
     default:
         return nullptr;
diff --git a/Mixer.h b/Mixer.h
index f435425..e2119a9 100644
--- a/Mixer.h
+++ b/Mixer.h
@@ -14,8 +14,8 @@ class Mixer
 {
     // Private Constructor
     Mixer();
-    Mixer(Rendering const& copy);            // Not Implemented
-    Mixer& operator=(Rendering const& copy); // Not Implemented
+    Mixer(Mixer const& copy);            // Not Implemented
+    Mixer& operator=(Mixer const& copy); // Not Implemented
 
 public:
 
@@ -40,9 +40,8 @@ public:
     Source *currentSource();
 
     // management of view
-    typedef enum {RENDERING = 0, MIXING=1, GEOMETRY=2, LAYER=3, INVALID=4 } viewMode;
-    View *getView(viewMode m);
-    void setCurrentView(viewMode m);
+    View *getView(View::Mode m);
+    void setCurrentView(View::Mode m);
     View *currentView();
 
     inline FrameBuffer *frame() const { return render_.frameBuffer(); }
diff --git a/RenderingManager.cpp b/RenderingManager.cpp
index 42f92de..3e1e579 100644
--- a/RenderingManager.cpp
+++ b/RenderingManager.cpp
@@ -337,11 +337,8 @@ glm::mat4 Rendering::Projection()
 
 glm::vec3 Rendering::unProject(glm::vec2 screen_coordinate, glm::mat4 modelview)
 {
-    glm::vec3 coordinates = glm::vec3( screen_coordinate.x, -screen_coordinate.y, 0.f);
+    glm::vec3 coordinates = glm::vec3( screen_coordinate.x, main_window_attributes_.viewport.y - screen_coordinate.y, 0.f);
     glm::vec4 viewport = glm::vec4( 0.f, 0.f, main_window_attributes_.viewport.x, main_window_attributes_.viewport.y);
-
-//    glm::mat4 mv = glm::scale(modelview, glm::vec3(1.f, -1.f, 1.f));
-//    glm::mat4 mv = glm::inverse(modelview);
     glm::vec3 point = glm::unProject(coordinates, modelview, Projection(), viewport);
 
     return point;
diff --git a/Scene.cpp b/Scene.cpp
index d802d96..17f30a0 100644
--- a/Scene.cpp
+++ b/Scene.cpp
@@ -175,7 +175,11 @@ void Primitive::deleteGLBuffers_()
 
 Group::~Group()
 {
-    children_.clear();
+//    for(auto it = children_.begin(); it != children_.end(); )
+//        it = children_.erase(it);
+    // TODO vrify that desctructor of node is called
+    children_.erase(children_.begin(), children_.end());
+
 }
 
 void Group::update( float dt )
@@ -354,7 +358,7 @@ void Animation::update( float dt )
 
 void Animation::accept(Visitor& v)
 {
-    Node::accept(v);
+    Group::accept(v);
     v.visit(*this);
 }
 
diff --git a/SessionVisitor.cpp b/SessionVisitor.cpp
index dda7128..a8631d0 100644
--- a/SessionVisitor.cpp
+++ b/SessionVisitor.cpp
@@ -60,6 +60,19 @@ void SessionVisitor::visit(Switch &n)
     xmlCurrent_->SetAttribute("active", n.getIndexActiveChild());
 }
 
+void SessionVisitor::visit(Animation &n)
+{
+    // Node of a different type
+    xmlCurrent_->SetAttribute("type", "Animation");
+
+    XMLElement *anim = xmlDoc_->NewElement("Movement");
+    anim->SetAttribute("speed", n.speed_);
+    anim->SetAttribute("radius", n.radius_);
+    XMLElement *axis = XMLElementFromGLM(xmlDoc_, n.axis_);
+    anim->InsertEndChild(axis);
+    xmlCurrent_->InsertEndChild(anim);
+}
+
 void SessionVisitor::visit(Primitive &n)
 {
     // Node of a different type
@@ -88,6 +101,12 @@ void SessionVisitor::visit(ImageSurface &n)
     xmlCurrent_->InsertEndChild(image);
 }
 
+void SessionVisitor::visit(FrameBufferSurface &n)
+{
+    // Node of a different type
+    xmlCurrent_->SetAttribute("type", "FrameBufferSurface");
+}
+
 void SessionVisitor::visit(MediaSurface &n)
 {
     // Node of a different type
diff --git a/SessionVisitor.h b/SessionVisitor.h
index 548f65f..40d5b64 100644
--- a/SessionVisitor.h
+++ b/SessionVisitor.h
@@ -16,22 +16,24 @@ public:
     tinyxml2::XMLElement *root() {return xmlRoot_;}
 
     // Elements of Scene
-    void visit(Scene& n) override;
-    void visit(Node& n) override;
-    void visit(Group& n) override;
-    void visit(Switch& n) override;
-    void visit(Primitive& n) override;
-    void visit(ImageSurface& n) override;
-    void visit(MediaSurface& n) override;
-    void visit(LineStrip& n) override;
-    void visit(LineSquare&) override;
-    void visit(LineCircle& n) override;
-    void visit(Mesh& n) override;
+    void visit(Scene& n);
+    void visit(Node& n);
+    void visit(Group& n);
+    void visit(Switch& n);
+    void visit(Animation& n);
+    void visit(Primitive& n);
+    void visit(ImageSurface& n);
+    void visit(MediaSurface& n);
+    void visit(FrameBufferSurface& n);
+    void visit(LineStrip& n);
+    void visit(LineSquare&);
+    void visit(LineCircle& n);
+    void visit(Mesh& n);
 
     // Elements with attributes
-    void visit(MediaPlayer& n) override;
-    void visit(Shader& n) override;
-    void visit(ImageShader& n) override;
+    void visit(MediaPlayer& n);
+    void visit(Shader& n);
+    void visit(ImageShader& n);
 };
 
 #endif // XMLVISITOR_H
diff --git a/Source.cpp b/Source.cpp
index f339f6f..aa0805e 100644
--- a/Source.cpp
+++ b/Source.cpp
@@ -3,21 +3,45 @@
 
 #include "Source.h"
 
+#include "FrameBuffer.h"
+#include "ImageShader.h"
+#include "Primitives.h"
+#include "Mesh.h"
+#include "MediaPlayer.h"
+
+
 // gobal static list of all sources
 SourceList Source::sources_;
 
-
-Source::Source(std::string name = "") : name_(""), buffer_(nullptr), shader_(nullptr), surface_(nullptr)
+Source::Source(std::string name = "") : name_("")
 {
     // set a name
     rename(name);
 
+    // create groups for each view
+
+    // default rendering node
+    groups_[View::RENDERING] = new Group;
+    groups_[View::RENDERING]->scale_ = glm::vec3(5.f, 5.f, 1.f); // fit height full window
+
+    // default mixing nodes
+    groups_[View::MIXING] = new Group;
+    Frame *frame = new Frame;
+    groups_[View::MIXING]->addChild(frame);
+    groups_[View::MIXING]->scale_ = glm::vec3(0.25f, 0.25f, 1.f);
+
     // add source to the list
     sources_.push_back(this);
 }
 
 Source::~Source()
 {
+    // delete groups and their children
+    delete groups_[View::RENDERING];
+    delete groups_[View::MIXING];
+    groups_.clear();
+
+    // remove this source from the list
     sources_.remove(this);
 }
 
@@ -46,7 +70,6 @@ std::string Source::rename (std::string newname)
     return name_;
 }
 
-
 SourceList::iterator Source::begin()
 {
     return sources_.begin();
@@ -61,3 +84,47 @@ uint Source::numSource()
 {
     return sources_.size();
 }
+
+MediaSource::MediaSource(std::string name, std::string uri) : Source(name)
+{
+    surface_ = new MediaSurface(uri);
+
+    // add the surface to draw in the views
+    groups_[View::RENDERING]->addChild(surface_);
+    groups_[View::MIXING]->addChild(surface_);
+
+}
+
+MediaSource::~MediaSource()
+{
+    // TODO verify that surface_ node is deleted in Source destructor
+}
+
+Shader *MediaSource::shader() const
+{
+    return surface_->shader();
+}
+
+std::string MediaSource::uri() const
+{
+    return surface_->getUri();
+}
+
+MediaPlayer *MediaSource::mediaplayer() const
+{
+    return surface_->getMediaPlayer();
+}
+
+void MediaSource::render()
+{
+//    surface_->shader()
+
+    // scalle all mixing nodes to match scale of surface
+    for (NodeSet::iterator node = groups_[View::MIXING]->begin();
+         node != groups_[View::MIXING]->end(); node++) {
+        (*node)->scale_ = surface_->scale_;
+    }
+
+    // read position of the mixing node and interpret this as transparency change
+
+}
diff --git a/Source.h b/Source.h
index 95e2bc3..7c47ed6 100644
--- a/Source.h
+++ b/Source.h
@@ -2,11 +2,16 @@
 #define SOURCE_H
 
 #include <string>
+#include <map>
 #include <list>
 
-#include "FrameBuffer.h"
-#include "ImageShader.h"
-#include "Primitives.h"
+#include "View.h"
+
+class ImageShader;
+class Surface;
+class FrameBuffer;
+class MediaPlayer;
+class MediaSurface;
 
 class Source;
 // TODO : source set sorted by shader
@@ -17,6 +22,7 @@ class Source
 {
 public:
     // create a source and add it to the list
+    // only subclasses of sources can actually be instanciated
     Source(std::string name);
     virtual ~Source();
 
@@ -24,13 +30,13 @@ public:
     inline std::string name () const { return name_; }
     std::string rename (std::string newname);
 
-    // void setCustomShader();
-    inline Shader *shader() const { return shader_; }
+    // get handle on the node used to manipulate the source in a view
+    inline Group *group(View::Mode m) { return groups_[m]; }
 
-    // for scene
-    inline FrameBufferSurface *surface() const { return surface_; }
+    // every Source have a shader to control visual effects
+    virtual Shader *shader() const = 0;
 
-    // only subclasses of sources can actually be instanciated
+    // every Source shall be rendered before draw
     virtual void render() = 0;
 
     // global management of list of sources
@@ -42,12 +48,8 @@ protected:
     // name
     std::string name_;
 
-    // a source draws in a frame buffer an input using a given shader
-    FrameBuffer *buffer_;
-    ImageShader *shader_;
-
-    // a surface is used to draw in the scenes
-    FrameBufferSurface *surface_;
+    // nodes
+    std::map<View::Mode, Group*> groups_;
 
     // static global list of sources
     static SourceList sources_;
@@ -68,4 +70,25 @@ private:
 
 };
 
+class MediaSource : public Source
+{
+public:
+    MediaSource(std::string name, std::string uri);
+    ~MediaSource();
+
+    void render();
+
+    // Source interface
+    Shader *shader() const;
+
+    // Media specific interface
+    std::string uri() const;
+    MediaPlayer *mediaplayer() const;
+
+protected:
+
+    MediaSurface *surface_;
+};
+
+
 #endif // SOURCE_H
diff --git a/UserInterfaceManager.cpp b/UserInterfaceManager.cpp
index 79ee6c6..5266213 100644
--- a/UserInterfaceManager.cpp
+++ b/UserInterfaceManager.cpp
@@ -21,6 +21,7 @@
 
 #include <glm/glm.hpp>
 #include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtx/string_cast.hpp>
 
 // generic image loader
 #define STB_IMAGE_IMPLEMENTATION
@@ -161,34 +162,47 @@ void UserInterface::handleMouse()
     // if not on any window
     if ( !ImGui::IsAnyWindowHovered() && !ImGui::IsAnyWindowFocused() )
     {
+        ImGui::FocusWindow(0);
+        //
         // Mouse wheel over background
+        //
         if ( io.MouseWheel != 0) {
-
+            // scroll => zoom current view
             Mixer::manager().currentView()->zoom( io.MouseWheel );
+        }
+        //
+        // RIGHT Mouse button
+        //
+        if ( ImGui::IsMouseDown(ImGuiMouseButton_Right)) {
+
+            Log::Info("Right Mouse press (%.1f,%.1f)", io.MousePos.x, io.MousePos.y);
+
+            glm::vec3 point = Rendering::manager().unProject(glm::vec2(io.MousePos.x, io.MousePos.y),
+                                                          Mixer::manager().currentView()->scene.root()->transform_ );
+
+            Log::Info("                  (%.1f,%.1f)", point.x, point.y);
 
-            Log::Info(" wheel %.1f", io.MouseWheel);
         }
 
         if ( ImGui::IsMouseDragging(ImGuiMouseButton_Right, 10.0f) )
         {
-//            Log::Info("Mouse drag (%.1f,%.1f)(%.1f,%.1f)", io.MouseDelta.x, io.MouseDelta.y, io.MousePos.x, io.MousePos.y);
-
+            // right mouse drag => drag current view
             Mixer::manager().currentView()->drag( glm::vec2(io.MouseClickedPos[ImGuiMouseButton_Right].x, io.MouseClickedPos[ImGuiMouseButton_Right].y), glm::vec2(io.MousePos.x, io.MousePos.y));
 
             ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeAll);
-
         }
-        else {
-
+        else
             ImGui::SetMouseCursor(ImGuiMouseCursor_Arrow);
-        }
 
+        //
+        // RIGHT Mouse button
+        //
         if ( ImGui::IsMouseDown(ImGuiMouseButton_Left)) {
 
             Log::Info("Mouse press (%.1f,%.1f)", io.MousePos.x, io.MousePos.y);
 
-            glm::mat4 mv = glm::identity<glm::mat4>();
-            glm::vec3 point = Rendering::manager().unProject(glm::vec2(io.MousePos.x, io.MousePos.y), mv);
+            glm::vec3 point = Rendering::manager().unProject(glm::vec2(io.MousePos.x, io.MousePos.y),
+                                                             Mixer::manager().currentView()->scene.root()->transform_ );
 
             Log::Info("            (%.1f,%.1f)", point.x, point.y);
 
diff --git a/View.cpp b/View.cpp
index 434a2b2..afa96d5 100644
--- a/View.cpp
+++ b/View.cpp
@@ -23,6 +23,7 @@ void View::update(float dt)
 
 MixingView::MixingView() : View()
 {
+    // Mixing scene
     Mesh *disk = new Mesh("mesh/disk.ply", "images/transparencygrid.png");
     backgound_.addChild(disk);
 
@@ -30,26 +31,18 @@ MixingView::MixingView() : View()
     LineCircle *circle = new LineCircle(pink, 5);
     backgound_.addChild(circle);
 
-
     scene.root()->addChild(&backgound_);
-    scene.root()->addChild(&foreground_);
-
-    // make sure there is no depth fight
-//    foreground.translation_ = glm::vec3(0.f, 0.f, 0.1f);
 }
 
 MixingView::~MixingView()
 {
-    // delete background
-    for (NodeSet::iterator node = backgound_.begin(); node != backgound_.end(); node++) {
-        delete (*node);
-    }
+
 
 }
 
 void MixingView::draw()
 {
-    // draw in main view
+    // draw scene of this view
     scene.root()->draw(glm::identity<glm::mat4>(), Rendering::manager().Projection());
 }
 
@@ -104,7 +97,7 @@ void RenderView::setResolution(uint width, uint height)
 void RenderView::draw()
 {
     static glm::mat4 projection = glm::ortho(-SCENE_UNIT, SCENE_UNIT, -SCENE_UNIT, SCENE_UNIT, SCENE_DEPTH, 0.f);
-    glm::mat4 P  = glm::scale( projection, glm::vec3(1.f, frame_buffer_->aspectRatio(), 1.f));
+    glm::mat4 P  = glm::scale( projection, glm::vec3(1.f / frame_buffer_->aspectRatio(), 1.f, 1.f));
     frame_buffer_->begin();
     scene.root()->draw(glm::identity<glm::mat4>(), P);
     frame_buffer_->end();
diff --git a/View.h b/View.h
index f4a22e8..3013091 100644
--- a/View.h
+++ b/View.h
@@ -11,6 +11,8 @@ class View
 public:
     View();
 
+    typedef enum {RENDERING = 0, MIXING=1, GEOMETRY=2, LAYER=3, INVALID=4 } Mode;
+
     virtual void update (float dt);
     virtual void draw () = 0;
     virtual void zoom (float) {}
@@ -20,7 +22,6 @@ public:
 
 protected:
     Group backgound_;
-    Group foreground_;
 };
 
 
@@ -33,6 +34,7 @@ public:
     void draw () override;
     void zoom (float factor);
     void drag (glm::vec2 from, glm::vec2 to);
+
 };
 
 class RenderView : public View
diff --git a/Visitor.h b/Visitor.h
index a6c0ae1..5789656 100644
--- a/Visitor.h
+++ b/Visitor.h
@@ -7,10 +7,12 @@
 class Node;
 class Group;
 class Switch;
+class Animation;
 class Primitive;
 class Scene;
 class ImageSurface;
 class MediaSurface;
+class FrameBufferSurface;
 class LineStrip;
 class LineSquare;
 class LineCircle;
@@ -24,20 +26,23 @@ class Visitor {
 
 public:
     // Declare overloads for each kind of Node to visit
-    virtual void visit(Scene& n) = 0;
-    virtual void visit(Node& n) = 0;
-    virtual void visit(Group& n) = 0;
-    virtual void visit(Switch& n) = 0;
-    virtual void visit(Primitive& n) = 0;
-    virtual void visit(ImageSurface& n) = 0;
-    virtual void visit(MediaSurface& n) = 0;
-    virtual void visit(LineStrip& n) = 0;
-    virtual void visit(LineSquare& n) = 0;
-    virtual void visit(LineCircle& n) = 0;
-    virtual void visit(Mesh& n) = 0;
-    virtual void visit(MediaPlayer& n) = 0;
-    virtual void visit(Shader& n) = 0;
-    virtual void visit(ImageShader& n) = 0;
+    virtual void visit (Scene&) = 0;
+    virtual void visit (Node&) = 0;
+    virtual void visit (Group&) = 0;
+    virtual void visit (Switch&) = 0;
+    virtual void visit (Animation&) = 0;
+    virtual void visit (Primitive&) = 0;
+    virtual void visit (ImageSurface&) = 0;
+    virtual void visit (MediaSurface&) = 0;
+    virtual void visit (FrameBufferSurface&) = 0;
+    virtual void visit (LineStrip&) = 0;
+    virtual void visit (LineSquare&) = 0;
+    virtual void visit (LineCircle&) = 0;
+    virtual void visit (Mesh&) = 0;
+
+    virtual void visit (MediaPlayer&) = 0;
+    virtual void visit (Shader&) = 0;
+    virtual void visit (ImageShader&) = 0;
 
 };
 
diff --git a/main.cpp b/main.cpp
index a8b3949..228ac77 100644
--- a/main.cpp
+++ b/main.cpp
@@ -31,7 +31,7 @@
 #include "Mixer.h"
 #include "RenderingManager.h"
 #include "UserInterfaceManager.h"
-
+#include "FrameBuffer.h"
 
 #include "MediaPlayer.h"
 #include "Scene.h"
@@ -55,9 +55,9 @@
 ////    ("file:///Users/Herbelin/Movies/mp2test.mpg");
 
 
-MediaSurface testnode1("file:///home/bhbn/Videos/iss.mov");
+//MediaSurface testnode1("file:///home/bhbn/Videos/iss.mov");
 MediaSurface testnode2("file:///home/bhbn/Videos/fish.mp4");
-ImageSurface testnode3("images/seed_512.jpg");
+//ImageSurface testnode3("images/seed_512.jpg");
 
 
 void drawMediaPlayer()
@@ -200,7 +200,8 @@ void drawScene()
     // draw GUI tree scene
     ImGui::Begin(IMGUI_TITLE_MAINWINDOW);
     static ImGuiVisitor v;
-    Mixer::manager().currentView()->scene.accept(v);
+//    Mixer::manager().currentView()->scene.accept(v);
+    Mixer::manager().getView(View::RENDERING)->scene.accept(v);
     ImGui::End();
 }
 
@@ -255,56 +256,56 @@ int main(int, char**)
 //    UserInterface::manager().OpenTextEditor( Resource::getText("shaders/texture-shader.fs") );
 
     // init the scene
-    Mixer::manager().setCurrentView(Mixer::MIXING);
+    Mixer::manager().setCurrentView(View::MIXING);
     Rendering::manager().PushFrontDrawCallback(drawScene);
 
     // init elements to the scene
     //testnode3.getShader()->blending = Shader::BLEND_OPACITY;
 
-    Mesh disk("mesh/disk.ply", "images/transparencygrid.png");
+    Mixer::manager().createSourceMedia("file:///home/bhbn/Videos/iss.mov");
+    Mixer::manager().createSourceMedia("file:///home/bhbn/Videos/fish.mp4");
 
-    glm::vec4 pink( 0.8f, 0.f, 0.8f, 1.f );
-    LineCircle circle(pink, 5);
+//    Mesh disk("mesh/disk.ply", "images/transparencygrid.png");
+
+//    glm::vec4 pink( 0.8f, 0.f, 0.8f, 1.f );
+//    LineCircle circle(pink, 5);
 
 //    glm::vec4 color( 0.8f, 0.8f, 0.f, 1.f);
 //    LineSquare border(color, 5);
 //    Mesh shadow("mesh/shadow.ply", "mesh/shadow.png");
 //    Mesh meshicon("mesh/icon_video.ply");
 
-    Frame frame;
-    frame.scale_ = glm::vec3(1.7777778f, 1.f, 1.f);
+//    Frame frame;
+//    frame.scale_ = glm::vec3(1.7777778f, 1.f, 1.f);
 
-    Group g1;
-    g1.translation_ = glm::vec3(1.f, 1.f, 1.f);
-    g1.scale_ = glm::vec3(0.8f, 0.8f, 1.f);
+//    Group g1;
+//    g1.translation_ = glm::vec3(1.f, 1.f, 1.f);
+//    g1.scale_ = glm::vec3(0.8f, 0.8f, 1.f);
 
-    Group g2;
-    g2.translation_ = glm::vec3(-1.f, -1.f, 2.f);
+//    Group g2;
+//    g2.translation_ = glm::vec3(-1.f, -1.f, 2.f);
 
-    Animation A;
-    A.translation_ = glm::vec3(0.f, 0.f, 3.f);
-    A.speed_ = 0.1f;
-    A.axis_ = glm::vec3(1.f, 1.f, 1.f);
+//    Animation A;
+//    A.translation_ = glm::vec3(0.f, 0.f, 3.f);
+//    A.speed_ = 0.1f;
+//    A.axis_ = glm::vec3(1.f, 1.f, 1.f);
 
-//    std::vector<glm::vec3> pts = std::vector<glm::vec3> { glm::vec3( 0.f, 0.f, 0.f ) };
-//    Points P(pts, pink);
-//    P.setPointSize(60);
-    Mesh P("mesh/point.ply");
-    P.scale_ = glm::vec3(0.15f);
+////    std::vector<glm::vec3> pts = std::vector<glm::vec3> { glm::vec3( 0.f, 0.f, 0.f ) };
+////    Points P(pts, pink);
+////    P.setPointSize(60);
+//    Mesh P("mesh/point.ply");
+//    P.scale_ = glm::vec3(0.15f);
 
-    // build tree
-    Mixer::manager().currentView()->scene.root()->addChild(&disk);
-    Mixer::manager().currentView()->scene.root()->addChild(&circle);
 
-    g1.addChild(&testnode3);
-    Mixer::manager().currentView()->scene.root()->addChild(&g1);
+//    g1.addChild(&testnode3);
+//    Mixer::manager().currentView()->scene.root()->addChild(&g1);
 
-    g2.addChild(&testnode1);
-    g2.addChild(&frame);
-    Mixer::manager().currentView()->scene.root()->addChild(&g2);
+//    g2.addChild(&testnode1);
+//    g2.addChild(&frame);
+//    Mixer::manager().currentView()->scene.root()->addChild(&g2);
 
-    A.addChild(&P);
-    Mixer::manager().currentView()->scene.root()->addChild(&A);
+//    A.addChild(&P);
+//    Mixer::manager().currentView()->scene.root()->addChild(&A);
 
     // init output FBO
     Rendering::manager().PushBackDrawCallback(drawPreview);