diff --git a/drivers/coreaudio/AudioRender.cpp b/drivers/coreaudio/AudioRender.cpp
index 76b5338..972833f 100644
--- a/drivers/coreaudio/AudioRender.cpp
+++ b/drivers/coreaudio/AudioRender.cpp
@@ -142,7 +142,7 @@ vBufferSize(bufferSize)
     inBuffers = NULL;
     outBuffers = NULL;
     status =
-	ConfigureAudioProc(sampleRate, bufferSize, outChannels, inChannels,
+		ConfigureAudioProc(sampleRate, bufferSize, outChannels, inChannels,
 			   device);
 
     AudioRender::gSampleRate = vSampleRate;
@@ -164,11 +164,9 @@ vBufferSize(bufferSize)
 AudioRender::~AudioRender()
 {
     if (status) {
-		if (isProcessing)
-			AudioDeviceStop(vDevice, process);
-		OSStatus err = AudioDeviceRemoveIOProc(vDevice, process);
-		if (err == noErr)
-			status = false;
+		if (isProcessing) AudioDeviceStop(vDevice, process);
+		AudioDeviceRemoveIOProc(vDevice, process);
+		AudioDeviceRemovePropertyListener(vDevice,0,true,kAudioDeviceProcessorOverload,notification);
 		free(inBuffers);
 		free(outBuffers);
     }
@@ -322,6 +320,8 @@ bool AudioRender::ConfigureAudioProc(float sampleRate, long bufferSize,
 			       kAudioDevicePropertyBufferFrameSize, &size,
 			       &bufFrame);
     if (err != noErr) return false;
+	
+	JCALog("Internal buffer size %d.\n", bufFrame);
 
     vBufferSize = (long) bufFrame;
 
@@ -380,6 +380,9 @@ bool AudioRender::ConfigureAudioProc(float sampleRate, long bufferSize,
 
     err = AudioDeviceAddIOProc(vDevice, process, this);
     if (err != noErr) return false;
+	
+	err = AudioDeviceAddPropertyListener(vDevice,0,true,kAudioDeviceProcessorOverload,notification,this);
+	if (err != noErr) return false;
 
     return true;
 }
@@ -408,6 +411,23 @@ bool AudioRender::StopAudio()
     return false;
 }
 
+OSStatus AudioRender::notification(AudioDeviceID inDevice,
+									UInt32 inChannel,
+									Boolean	isInput,
+									AudioDevicePropertyID inPropertyID,
+									void* inClientData)
+{
+	AudioRender *classe = (AudioRender *) inClientData;
+	
+	switch(inPropertyID) {
+	
+		case kAudioDeviceProcessorOverload:
+			JCALog("notification kAudioDeviceProcessorOverload\n");
+			break;
+	
+	}
+}
+
 OSStatus AudioRender::process(AudioDeviceID inDevice,
 			      const AudioTimeStamp * inNow,
 			      const AudioBufferList * inInputData,
@@ -428,28 +448,26 @@ OSStatus AudioRender::process(AudioDeviceID inDevice,
 	if (!*classe->isInterleaved) {
 		for (unsigned int a = 0; a < inInputData->mNumberBuffers; a++) {
 			classe->inBuffers[channel] =
-			(float *) inInputData->mBuffers[a].mData;
+				(float *) inInputData->mBuffers[a].mData;
 			channel++;
-			if (channel == classe->vInChannels)
-			break;
+			if (channel == classe->vInChannels) break;
 		}
 		channel = 0;
 		for (unsigned int a = 0; a < outOutputData->mNumberBuffers; a++) {
 			classe->outBuffers[channel] =
-			(float *) outOutputData->mBuffers[a].mData;
+				(float *) outOutputData->mBuffers[a].mData;
 			channel++;
-			if (channel == classe->vOutChannels)
-			break;
+			if (channel == classe->vOutChannels) break;
 		}
 	} else {
 		for (unsigned int b = 0; b < inInputData->mNumberBuffers; b++) {
 			classe->channelsPerStream[b] =
-			(int) inInputData->mBuffers[b].mNumberChannels;
+				(int) inInputData->mBuffers[b].mNumberChannels;
 			classe->inBuffers[b] = (float *) inInputData->mBuffers[b].mData;	// but jack will read only the inBuffers[0], anyway that should not be a problem.
 		}
 		for (unsigned int b = 0; b < outOutputData->mNumberBuffers; b++) {
 			classe->out_channelsPerStream[b] =
-			(int) outOutputData->mBuffers[b].mNumberChannels;
+				(int) outOutputData->mBuffers[b].mNumberChannels;
 			classe->outBuffers[b] = (float *) outOutputData->mBuffers[b].mData;	// but jack will read only the outBuffers[0], anyway that should not be a problem.
 		}
     }
@@ -460,14 +478,10 @@ OSStatus AudioRender::process(AudioDeviceID inDevice,
 
 float **AudioRender::getADC()
 {
-    if (AudioRender::theRender == NULL)
-		return NULL;
-    return AudioRender::theRender->inBuffers;
+    return (AudioRender::theRender == NULL) ? NULL : AudioRender::theRender->inBuffers;
 }
 
 float **AudioRender::getDAC()
 {
-    if (AudioRender::theRender == NULL)
-		return NULL;
-    return AudioRender::theRender->outBuffers;
+    return (AudioRender::theRender == NULL) ? NULL : AudioRender::theRender->outBuffers;		
 }
diff --git a/drivers/coreaudio/AudioRender.h b/drivers/coreaudio/AudioRender.h
index 2680158..164b13e 100644
--- a/drivers/coreaudio/AudioRender.h
+++ b/drivers/coreaudio/AudioRender.h
@@ -74,5 +74,10 @@ class AudioRender {
 			    AudioBufferList * outOutputData,
 			    const AudioTimeStamp * inOutputTime,
 			    void *inClientData);
+	static OSStatus notification(AudioDeviceID inDevice,
+									UInt32 inChannel,
+									Boolean	isInput,
+									AudioDevicePropertyID inPropertyID,
+									void* inClientData);
     static AudioRender *theRender;
 };
diff --git a/drivers/coreaudio/AudioRenderBridge.cpp b/drivers/coreaudio/AudioRenderBridge.cpp
index 88f7f13..aede04b 100644
--- a/drivers/coreaudio/AudioRenderBridge.cpp
+++ b/drivers/coreaudio/AudioRenderBridge.cpp
@@ -31,11 +31,14 @@ void *openPandaAudioInstance(float sampleRate, long bufferSize,
 			     int inChannels, int outChannels, char *device)
 {
     AudioRender *newInst =
-	new AudioRender(sampleRate, bufferSize, inChannels, outChannels,
-			device);
-    if (newInst->status)
+		new AudioRender(sampleRate, bufferSize, inChannels, outChannels,
+				device);
+    if (newInst->status) 
 		return newInst;
-    return NULL;
+	else {
+		delete newInst;
+		return NULL;
+	}
 }
 
 void closePandaAudioInstance(void *instance)
diff --git a/drivers/coreaudio/coreaudio_driver.c b/drivers/coreaudio/coreaudio_driver.c
index 6c6ebac..613746c 100755
--- a/drivers/coreaudio/coreaudio_driver.c
+++ b/drivers/coreaudio/coreaudio_driver.c
@@ -66,15 +66,13 @@ static OSStatus get_device_id_from_num(int i, AudioDeviceID * id)
     int nDevices;
     AudioDeviceID *theDeviceList;
 
-    theStatus =
-	AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
+    theStatus = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
 				     &theSize, NULL);
     nDevices = theSize / sizeof(AudioDeviceID);
     theDeviceList =
 	(AudioDeviceID *) malloc(nDevices * sizeof(AudioDeviceID));
-    theStatus =
-	AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &theSize,
-				 theDeviceList);
+    theStatus = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, 
+					&theSize, theDeviceList);
 
     *id = theDeviceList[i];
     return theStatus;
@@ -111,50 +109,46 @@ coreaudio_driver_attach(coreaudio_driver_t * driver,
      */
 
     for (chn = 0; chn < driver->capture_nchannels; chn++) {
+		//snprintf (buf, sizeof(buf) - 1, "capture_%lu", chn+1);
+		snprintf(buf, sizeof(buf) - 1, "%s:out%lu", driver->driver_name,
+			 chn + 1);
+
+		if ((port = jack_port_register(driver->client, buf,
+					JACK_DEFAULT_AUDIO_TYPE, port_flags,
+					0)) == NULL) {
+			jack_error("coreaudio: cannot register port for %s", buf);
+			break;
+		}
 
-	//snprintf (buf, sizeof(buf) - 1, "capture_%lu", chn+1);
-	snprintf(buf, sizeof(buf) - 1, "%s:out%lu", driver->driver_name,
-		 chn + 1);
-
-	if ((port =
-	     jack_port_register(driver->client, buf,
-				JACK_DEFAULT_AUDIO_TYPE, port_flags,
-				0)) == NULL) {
-	    jack_error("coreaudio: cannot register port for %s", buf);
-	    break;
-	}
-
-	/* XXX fix this so that it can handle: systemic (external) latency
-	 */
-
-	jack_port_set_latency(port, driver->frames_per_cycle);
+		/* XXX fix this so that it can handle: systemic (external) latency
+		 */
 
-	driver->capture_ports =
-	    jack_slist_append(driver->capture_ports, port);
+		jack_port_set_latency(port, driver->frames_per_cycle);
+		driver->capture_ports =
+			jack_slist_append(driver->capture_ports, port);
     }
 
     port_flags = JackPortIsInput | JackPortIsPhysical | JackPortIsTerminal;
 
-    for (chn = 0; chn < driver->playback_nchannels; chn++) {
-	//snprintf (buf, sizeof(buf) - 1, "playback_%lu", chn+1);
-	snprintf(buf, sizeof(buf) - 1, "%s:in%lu", driver->driver_name,
-		 chn + 1);
-
-	if ((port =
-	     jack_port_register(driver->client, buf,
-				JACK_DEFAULT_AUDIO_TYPE, port_flags,
-				0)) == NULL) {
-	    jack_error("coreaudio: cannot register port for %s", buf);
-	    break;
-	}
+	for (chn = 0; chn < driver->playback_nchannels; chn++) {
+		//snprintf (buf, sizeof(buf) - 1, "playback_%lu", chn+1);
+		snprintf(buf, sizeof(buf) - 1, "%s:in%lu", driver->driver_name,
+			 chn + 1);
 
-	/* XXX fix this so that it can handle: systemic (external) latency
-	 */
+		if ((port = jack_port_register(driver->client, buf,
+					JACK_DEFAULT_AUDIO_TYPE, port_flags,
+					0)) == NULL) {
+			jack_error("coreaudio: cannot register port for %s", buf);
+			break;
+		}
 
-	jack_port_set_latency(port, driver->frames_per_cycle);
-	driver->playback_ports =
-	    jack_slist_append(driver->playback_ports, port);
-    }
+		/* XXX fix this so that it can handle: systemic (external) latency
+		 */
+
+		jack_port_set_latency(port, driver->frames_per_cycle);
+		driver->playback_ports =
+			jack_slist_append(driver->playback_ports, port);
+	}
 
     jack_activate(driver->client);
     return 0;
@@ -232,15 +226,15 @@ coreaudio_driver_read(coreaudio_driver_t * driver, jack_nframes_t nframes)
 		} else {
 			if (jack_port_connected(port)
 			&& (driver->incoreaudio[b] != NULL)) {
-				int channels = driver->channelsPerStream[b];
+				int channels = driver->channelsPerInputStream[b];
 				if (channels <= chn) {
 					b++;
-					if (driver->numberOfStreams > 1
-					&& b < driver->numberOfStreams) {
-					channels = driver->channelsPerStream[b];
-					chn = 0;
+					if (driver->numberOfInputStreams > 1
+						&& b < driver->numberOfInputStreams) {
+						channels = driver->channelsPerInputStream[b];
+						chn = 0;
 					} else
-					return 0;
+						return 0;
 				}
 				if (channels > 0) {
 					float *in = driver->incoreaudio[b];
@@ -285,15 +279,15 @@ coreaudio_driver_write(coreaudio_driver_t * driver, jack_nframes_t nframes)
 		} else {
 			if (jack_port_connected(port)
 				&& (driver->outcoreaudio[b] != NULL)) {
-				int channels = driver->out_channelsPerStream[b];
+				int channels = driver->channelsPerOuputStream[b];
 				if (channels <= chn) {
 					b++;
-					if (driver->out_numberOfStreams > 1
-					&& b < driver->out_numberOfStreams) {
-					channels = driver->out_channelsPerStream[b];
-					chn = 0;
+					if (driver->numberOfOuputStreams > 1
+						&& b < driver->numberOfOuputStreams) {
+						channels = driver->channelsPerOuputStream[b];
+						chn = 0;
 					} else
-					return 0;
+						return 0;
 				}
 				if (channels > 0) {
 					float *out = driver->outcoreaudio[b];
@@ -330,16 +324,15 @@ coreaudio_driver_bufsize(coreaudio_driver_t * driver,
      * be serialized with the driver thread.  Stopping the audio
      * also stops that thread. */
 
-
     closePandaAudioInstance(driver->stream);
 
     driver->stream =
-	openPandaAudioInstance((float) driver->frame_rate,
+		openPandaAudioInstance((float) driver->frame_rate,
 			       driver->frames_per_cycle, driver->capturing,
 			       driver->playing, &driver->driver_name[0]);
 
     if (!driver->stream)
-	return FALSE;
+		return FALSE;
 
     setHostData(driver->stream, driver);
     setCycleFun(driver->stream, coreaudio_runCycle);
@@ -406,7 +399,7 @@ static jack_driver_t *coreaudio_driver_new(char *name,
     }
 
     driver->stream =
-	openPandaAudioInstance((float) rate, frames_per_cycle, chan_in,
+		openPandaAudioInstance((float) rate, frames_per_cycle, chan_in,
 			       chan_out, &deviceName[0]);
 
     if (!driver->stream)
@@ -414,25 +407,25 @@ static jack_driver_t *coreaudio_driver_new(char *name,
 
     driver->client = client;
     driver->period_usecs =
-	(((float) driver->frames_per_cycle) / driver->frame_rate) *
-	1000000.0f;
+		(((float) driver->frames_per_cycle) / driver->frame_rate) *
+		1000000.0f;
 
     setHostData(driver->stream, driver);
     setCycleFun(driver->stream, coreaudio_runCycle);
     setParameter(driver->stream, 'inte', &driver->isInterleaved);
-    setParameter(driver->stream, 'nstr', &driver->numberOfStreams);
-    setParameter(driver->stream, 'nstO', &driver->out_numberOfStreams);
+    setParameter(driver->stream, 'nstr', &driver->numberOfInputStreams);
+    setParameter(driver->stream, 'nstO', &driver->numberOfOuputStreams);
 
-    JCALog("There are %d input streams.\n", driver->numberOfStreams);
-    JCALog("There are %d output streams.\n", driver->out_numberOfStreams);
+    JCALog("There are %d input streams.\n", driver->numberOfInputStreams);
+    JCALog("There are %d output streams.\n", driver->numberOfOuputStreams);
 
-    driver->channelsPerStream =
-	(int *) malloc(sizeof(int) * driver->numberOfStreams);
-    driver->out_channelsPerStream =
-	(int *) malloc(sizeof(int) * driver->out_numberOfStreams);
+    driver->channelsPerInputStream =
+		(int *) malloc(sizeof(int) * driver->numberOfInputStreams);
+    driver->channelsPerOuputStream =
+		(int *) malloc(sizeof(int) * driver->numberOfOuputStreams);
 
-    setParameter(driver->stream, 'cstr', driver->channelsPerStream);
-    setParameter(driver->stream, 'cstO', driver->out_channelsPerStream);
+    setParameter(driver->stream, 'cstr', driver->channelsPerInputStream);
+    setParameter(driver->stream, 'cstO', driver->channelsPerOuputStream);
 
     driver->incoreaudio = getPandaAudioInputs(driver->stream);
     driver->outcoreaudio = getPandaAudioOutputs(driver->stream);
@@ -441,7 +434,8 @@ static jack_driver_t *coreaudio_driver_new(char *name,
     driver->capture_nchannels = chan_in;
 
     strcpy(&driver->driver_name[0], &deviceName[0]);
-    jack_init_time();
+	// steph
+    //jack_init_time();
     return ((jack_driver_t *) driver);
 
   error:
@@ -457,8 +451,8 @@ static void coreaudio_driver_delete(coreaudio_driver_t * driver)
 {
     /* Close coreaudio stream and terminate */
     closePandaAudioInstance(driver->stream);
-    free(driver->channelsPerStream);
-    free(driver->out_channelsPerStream);
+    free(driver->channelsPerInputStream);
+    free(driver->channelsPerOuputStream);
     free(driver);
 }
 
diff --git a/drivers/coreaudio/coreaudio_driver.h b/drivers/coreaudio/coreaudio_driver.h
index 9add0f8..7f200f0 100755
--- a/drivers/coreaudio/coreaudio_driver.h
+++ b/drivers/coreaudio/coreaudio_driver.h
@@ -54,9 +54,9 @@ typedef struct {
     float **incoreaudio;
     float **outcoreaudio;
     int isInterleaved;
-    int numberOfStreams;
-    int out_numberOfStreams;
-    int *channelsPerStream, *out_channelsPerStream;
+    int numberOfInputStreams;
+    int numberOfOuputStreams;
+    int *channelsPerInputStream, *channelsPerOuputStream;
     char driver_name[256];
     void *stream;