Changes to a number of dialogs so that the NVDA screen reader can read the titles. Missed these in my last patch. The accessibility name of the dialog is set to the title.

src/FFmpeg.cpp

@@ -450,6 +450,7 @@ public:
    FindFFmpegDialog(wxWindow *parent, wxString path, wxString name, wxString type)
       :  wxDialog(parent, wxID_ANY, wxString(_("Locate FFmpeg")))
    {
+      SetName(GetTitle());
       ShuttleGui S(this, eIsCreating);
 
       mPath = path;