diff --git a/ImGuiVisitor.cpp b/ImGuiVisitor.cpp
index 0413cbf..e375534 100644
--- a/ImGuiVisitor.cpp
+++ b/ImGuiVisitor.cpp
@@ -395,17 +395,22 @@ void ImGuiVisitor::visit (Source& s)
 
     // preview
     float preview_width = ImGui::GetContentRegionAvail().x IMGUI_RIGHT_ALIGN;
-    float width = preview_width;    
-    glm::vec2 size = s.frame()->projectionArea() * glm::vec2( s.frame()->aspectRatio(), 1.f);
-    float height = width * size.y / size.x;
-    if (height > 200) {
-        height = 200;
-        width = height * size.x / size.y;
+    float width = preview_width;
+    float height = width / s.frame()->aspectRatio();
+    if (height > 230) {
+        height = 230;
+        width = height * s.frame()->aspectRatio();
     }
     ImGui::Image((void*)(uintptr_t) s.frame()->texture(), ImVec2(width, height));
 
     ImVec2 pos = ImGui::GetCursorPos(); // remember where we were...
 
+    ImGui::SetCursorPos( ImVec2(preview_width + 15, pos.y -height ) );
+    if (s.active())
+        ImGuiToolkit::Icon(10, 4);
+    else
+        ImGuiToolkit::Icon(11, 4);
+
     // toggle enable/disable image processing
     bool on = s.imageProcessingEnabled();
     ImGui::SetCursorPos( ImVec2(preview_width + 15, pos.y -ImGui::GetFrameHeight() ) );
diff --git a/Selection.cpp b/Selection.cpp
index 0b7e218..a55c89c 100644
--- a/Selection.cpp
+++ b/Selection.cpp
@@ -111,6 +111,9 @@ uint Selection::size()
 
 Source *Selection::front()
 {
+    if (selection_.empty())
+        return nullptr;
+
     return selection_.front();
 }
 
diff --git a/UpdateCallback.cpp b/UpdateCallback.cpp
index 65d63ae..3fbaec4 100644
--- a/UpdateCallback.cpp
+++ b/UpdateCallback.cpp
@@ -70,8 +70,8 @@ void RotateToCallback::update(Node *n, float dt)
     }
 }
 
-BounceScaleCallback::BounceScaleCallback(float duration) : UpdateCallback(),
-    duration_(duration), progress_(0.f), initialized_(false)
+BounceScaleCallback::BounceScaleCallback(float scale) : UpdateCallback(),
+    duration_(100.f), progress_(0.f), initialized_(false), scale_(scale)
 {
 
 }
@@ -87,8 +87,8 @@ void BounceScaleCallback::update(Node *n, float dt)
     // calculate amplitude of movement
     progress_ += dt / duration_;
 
-    n->scale_.x = initial_scale_.x + (initial_scale_.x * 0.05f) * sin(M_PI * progress_);
-    n->scale_.y = initial_scale_.y + (initial_scale_.y * 0.05f) * sin(M_PI * progress_);
+    n->scale_.x = initial_scale_.x + (initial_scale_.x * scale_) * sin(M_PI * progress_);
+    n->scale_.y = initial_scale_.y + (initial_scale_.y * scale_) * sin(M_PI * progress_);
 
     // end of movement
     if ( progress_ > 1.f) {
diff --git a/UpdateCallback.h b/UpdateCallback.h
index 9ef8820..2c2fb1b 100644
--- a/UpdateCallback.h
+++ b/UpdateCallback.h
@@ -55,12 +55,13 @@ public:
 class BounceScaleCallback : public UpdateCallback
 {
     float duration_;
+    float scale_;
     float progress_;
     bool  initialized_;
     glm::vec3 initial_scale_;
 
 public:
-    BounceScaleCallback(float duration = 100.f);
+    BounceScaleCallback(float scale = 0.05f);
     void update(Node *n, float dt);
 };
 
diff --git a/View.cpp b/View.cpp
index 342fa97..3c3dd05 100644
--- a/View.cpp
+++ b/View.cpp
@@ -419,6 +419,9 @@ std::pair<Node *, glm::vec2> MixingView::pick(glm::vec2 P)
         else
             anim = new RotateToCallback(SIGN(slider_root_->rotation_.z) * M_PI, 500.f);
 
+        // animate clic
+        pick.first->update_callbacks_.push_back(new BounceScaleCallback(0.3f));
+
         // reset & start animation
         slider_root_->update_callbacks_.clear();
         slider_root_->update_callbacks_.push_back(anim);
@@ -502,7 +505,7 @@ View::Cursor MixingView::grab (Source *s, glm::vec2 from, glm::vec2 to, std::pai
 //    else if ( Mixer::manager().concealed(s) )
 //        info << "Stashed";
     else
-        info << "Inactive";
+        info << "Inactive " << ICON_FA_EYE_SLASH;
 
     // store action in history
     current_action_ = s->name() + ": " + info.str();
@@ -2055,6 +2058,13 @@ void AppearanceView::adjustBackground()
 
 Source *AppearanceView::getEditOrCurrentSource()
 {
+    // cancel multiple selection
+    if (Mixer::selection().size() > 1) {
+        Source *_alternate = Mixer::selection().front();
+        Mixer::selection().clear();
+        Mixer::manager().setCurrentSource(_alternate);
+    }
+
     // get current source
     Source *_source = Mixer::manager().currentSource();