Playlist can be run without saving too

public/app/features/playlist/partials/playlist.html

@@ -101,6 +101,10 @@
 
   <div class="pull-left">
     <div class="tight-form">
+      <button type="button"
+              class="btn btn-success"
+              ng-disabled="playlistEditForm.$invalid || isPlaylistEmpty()"
+              ng-click="startPlaylist(playlist, dashboards)">Start</button>
       <button type="button"
               class="btn btn-success"
               ng-disabled="playlistEditForm.$invalid || isPlaylistEmpty()"

public/app/features/playlist/playlistEditCtrl.js

@@ -79,6 +79,10 @@ function (angular, config, _) {
         });
     };
 
+    $scope.startPlaylist = function(playlist, dashboards) {
+      playlistSrv.start(dashboards, playlist.timespan);
+    };
+
     $scope.isPlaylistEmpty = function() {
       return !dashboards.length;
     };