diff --git a/branches/2.0/doubango/tinyDAV/include/tinydav/audio/coreaudio/tdav_producer_audiounit.h b/branches/2.0/doubango/tinyDAV/include/tinydav/audio/coreaudio/tdav_producer_audiounit.h
index c9c39628..4b543ce6 100644
--- a/branches/2.0/doubango/tinyDAV/include/tinydav/audio/coreaudio/tdav_producer_audiounit.h
+++ b/branches/2.0/doubango/tinyDAV/include/tinydav/audio/coreaudio/tdav_producer_audiounit.h
@@ -42,6 +42,7 @@ typedef struct tdav_producer_audiounit_s
 	tdav_audiounit_handle_t* audioUnitHandle;
 	unsigned started:1;
 	unsigned paused:1;
+    unsigned muted;
 	void* senderThreadId[1];
 	tsk_condwait_handle_t* senderCondWait;
 	
diff --git a/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_audiounit.c b/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_audiounit.c
index 114427d9..e5ce6d1a 100644
--- a/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_audiounit.c
+++ b/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_audiounit.c
@@ -203,7 +203,7 @@ int tdav_audiounit_handle_start(tdav_audiounit_handle_t* self)
 	if(!inst->started && (status = AudioOutputUnitStart(inst->audioUnit))){
 		TSK_DEBUG_ERROR("AudioOutputUnitStart failed with status=%ld", (signed long)status);
 	}
-    inst->started = status == 0 ? tsk_true : tsk_false;
+    inst->started = (status == noErr) ? tsk_true : tsk_false;
 	tsk_safeobj_unlock(inst);
 	return status ? -2 : 0;
 }
@@ -290,7 +290,7 @@ int tdav_audiounit_handle_mute(tdav_audiounit_handle_t* self, tsk_bool_t mute)
 	status = AudioUnitSetProperty(inst->audioUnit, kAUVoiceIOProperty_MuteOutput,
 								  kAudioUnitScope_Output, kOutputBus, mute ? &kOne : &kZero, mute ? sizeof(kOne) : sizeof(kZero));
 	
-	return status ? -2 : 0;
+	return (status == noErr) ? 0 : -2;
 #else
 	return 0;
 #endif
diff --git a/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_producer_audiounit.c b/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_producer_audiounit.c
index 9acb4f7d..c62e9383 100644
--- a/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_producer_audiounit.c
+++ b/branches/2.0/doubango/tinyDAV/src/audio/coreaudio/tdav_producer_audiounit.c
@@ -186,11 +186,12 @@ static void *__sender_thread(void *param)
 /* ============ Media Producer Interface ================= */
 int tdav_producer_audiounit_set(tmedia_producer_t* self, const tmedia_param_t* param)
 {	
+    tdav_producer_audiounit_t* producer = (tdav_producer_audiounit_t*)self;
 	if(param->plugin_type == tmedia_ppt_producer){
 		if(param->value_type == tmedia_pvt_int32){
 			if(tsk_striequals(param->key, "mute")){
-				int32_t mute = TSK_TO_INT32((uint8_t*)param->value);
-				return tdav_audiounit_handle_mute(((tdav_producer_audiounit_t*)self)->audioUnitHandle, mute ? tsk_true : tsk_false);
+				producer->muted = TSK_TO_INT32((uint8_t*)param->value);
+				return tdav_audiounit_handle_mute(((tdav_producer_audiounit_t*)self)->audioUnitHandle, producer->muted);
 			}
 		}
 	}
@@ -406,6 +407,9 @@ static int tdav_producer_audiounit_start(tmedia_producer_t* self)
 		}
 	}
 	producer->started = tsk_true;
+    
+    // apply parameters (because could be lost when the producer is restarted -handle recreated-)
+    ret = tdav_audiounit_handle_mute(producer->audioUnitHandle, producer->muted);
 	
 	// create conditional variable
 	if(!(producer->senderCondWait = tsk_condwait_create())){