MIDI imports, like other imports, are put into recent files list

src/Menus.cpp

@@ -6827,6 +6827,9 @@ AudacityProject *AudacityProject::DoImportMIDI(
 
       pProject->ZoomAfterImport(pTrack);
       pNewProject = nullptr;
+
+      wxGetApp().AddFileToHistory(fileName);
+
       return pProject;
    }
    else

src/Project.cpp

@@ -3075,7 +3075,10 @@ void AudacityProject::OpenFile(const wxString &fileNameArg, bool addtohistory)
    // FIXME: //v Surely we could be smarter about this, like checking much earlier that this is a .aup file.
    if (temp.Mid(0, 6) != wxT("<?xml ")) {
       // If it's not XML, try opening it as any other form of audio
-      Import(fileName);
+      if (Importer::IsMidi(fileName))
+         DoImportMIDI(this, fileName);
+      else
+         Import(fileName);
       return;
    }