+
+ if (devs.size() == 0) {
+ MessageDialog msg (_("\
+You do not have any audio devices capable of\n\
+simultaneous playback and recording.\n\n\
+Please use Applications -> Utilities -> Audio MIDI Setup\n\
+to create an \"aggregrate\" device, or install a suitable\n\
+audio interface.\n\n\
+Please send email to Apple and ask them why new Macs\n\
+have no duplex audio device.\n\n\
+Alternatively, if you really want just playback\n\
+or recording but not both, start JACK before running\n\
+Ardour and choose the relevant device then."
+ ),
+ true, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK);
+ msg.set_title (_("No suitable audio devices"));
+ msg.set_position (Gtk::WIN_POS_MOUSE);
+ msg.run ();
+ exit (1);
+ }
+
+