Index: 2.0-ongoing/libs/midi++2/mmc.cc
===================================================================
--- 2.0-ongoing/libs/midi++2/mmc.cc	(revision 5768)
+++ 2.0-ongoing/libs/midi++2/mmc.cc	(working copy)
@@ -202,7 +202,7 @@
 	
 	build_mmc_cmd_map ();
 
-	_receive_device_id = 0;
+	_receive_device_id = 0x7f;
 	_send_device_id = 0x7f;
 	
 	if ((parser = _port.input()) != 0) {
Index: 2.0-ongoing/libs/ardour/ardour/configuration_vars.h
===================================================================
--- 2.0-ongoing/libs/ardour/ardour/configuration_vars.h	(revision 5768)
+++ 2.0-ongoing/libs/ardour/ardour/configuration_vars.h	(working copy)
@@ -36,7 +36,7 @@
 CONFIG_VARIABLE (bool, send_mmc, "send-mmc", true)
 CONFIG_VARIABLE (bool, mmc_control, "mmc-control", true)
 CONFIG_VARIABLE (bool, midi_feedback, "midi-feedback", false)
-CONFIG_VARIABLE (uint8_t, mmc_receive_device_id, "mmc-receive-device-id", 0)
+CONFIG_VARIABLE (uint8_t, mmc_receive_device_id, "mmc-receive-device-id", 0x7f)
 CONFIG_VARIABLE (uint8_t, mmc_send_device_id, "mmc-send-device-id", 0x7f)
 CONFIG_VARIABLE (int32_t, initial_program_change, "initial-program-change", -1)