void FillTemplateTree()

    {

        AudioChannelFlags monoFlags = AudioChannelFlags.SpeakerFrontLeft;

        AudioChannelFlags stereoFlags = (AudioChannelFlags.SpeakerFrontLeft|AudioChannelFlags.SpeakerFrontRight);

        bool isProjectStereo = AudioBusMode.Stereo == myVegas.Project.Audio.MasterBusMode;

        bool hasVideo = ProjectHasVideo();

        foreach (Renderer renderer in myVegas.Renderers) {

            try {

                String rendererName = renderer.FileTypeName;

                TreeNode rendererNode = new TreeNode(rendererName);

                rendererNode.Tag = new RenderItem(renderer, null, null);

                foreach (RenderTemplate template in renderer.Templates) {

                    try {

                        // filter out video templates when project has

                        // no video.

                        if (!hasVideo && (0 < template.VideoStreamCount)) {

                            continue;

                        }

                        // filter out surround templates when project

                        // is stereo.

                        if (isProjectStereo) {

                            AudioChannelFlags channelMask = template.AudioChannelFlags;

                            if ((monoFlags != channelMask) && (stereoFlags != channelMask)) {

                                continue;

                            }

                        }

                        // filter out templates that don't have

                        // exactly one file extension

                        String[] extensions = template.FileExtensions;

                        if (1 != extensions.Length) {

                            continue;

                        }

                        String templateName = template.Name;

                        TreeNode templateNode = new TreeNode(templateName);

                        templateNode.Tag = new RenderItem(renderer, template, extensions[0]);







                        // pre-select the default wave template

                        if ((renderer.Name == "Wave (Microsoft)") && (template.Name == "Default Template"))

                        {

                            rendererNode.Checked = true;

                            templateNode.Checked = true;

                        }







                        rendererNode.Nodes.Add(templateNode);

                    } catch (Exception e) {

                        // skip it

                        MessageBox.Show(e.ToString());

                    }

                }

                if (0 < rendererNode.Nodes.Count)

                    TemplateTree.Nodes.Add(rendererNode);

            } catch {

                // skip it

            }

        }

    }