Make latest when overwriting channels

src/main.py

@@ -112,6 +112,7 @@ class Cast(wx.Frame):
             for channel in subscriptions:
                 channels.append(YouTube.YouTube(channel[0], channel[1]))
             self.m_providers[1].set_channels(channels)
+            self.m_providers[1].make_latest()
             self.show_channel_list(None,self.m_selected_provider_index)
 
     def show_provider_list(self, _) -> None: