diff --git a/src/input/input.cpp b/src/input/input.cpp
index 05b0af11..031f3f3e 100644
--- a/src/input/input.cpp
+++ b/src/input/input.cpp
@@ -464,6 +464,20 @@ namespace Mist {
     }
   }
   
+  void Input::trackSelect(std::string trackSpec){
+    selectedTracks.clear();
+    size_t index;
+    while (trackSpec != "") {
+      index = trackSpec.find(' ');
+      selectedTracks.insert(atoi(trackSpec.substr(0, index).c_str()));
+      if (index != std::string::npos) {
+        trackSpec.erase(0, index + 1);
+      } else {
+        trackSpec = "";
+      }
+    }
+  }
+
   void Input::parseHeader(){
     DEBUG_MSG(DLVL_DONTEVEN,"Parsing the header");
     selectedTracks.clear();
diff --git a/src/input/input.h b/src/input/input.h
index b0a9ccaa..3bc837e2 100644
--- a/src/input/input.h
+++ b/src/input/input.h
@@ -45,7 +45,7 @@ namespace Mist {
       void quitPlay();
       void checkHeaderTimes(std::string streamFile);
       virtual void removeUnused();
-      virtual void trackSelect(std::string trackSpec){};
+      virtual void trackSelect(std::string trackSpec);
       virtual void userCallback(char * data, size_t len, unsigned int id);
       virtual void convert();
       virtual void serve();