extern wxString context_translation (wxString);
extern std::string string_client_data (wxClientData* o);
extern wxString time_to_timecode (DCPTime t, double fps);
+extern void setup_audio_channels_choice (wxChoice* choice, int minimum);
extern void checked_set (FilePickerCtrl* widget, boost::filesystem::path value);
extern void checked_set (wxSpinCtrl* widget, int value);