diff --git a/Audio/Output/OutputAVFoundation.m b/Audio/Output/OutputAVFoundation.m
index 9c7a9aca7..d21b1af87 100644
--- a/Audio/Output/OutputAVFoundation.m
+++ b/Audio/Output/OutputAVFoundation.m
@@ -254,7 +254,8 @@ static OSStatus eqRenderCallback(void *inRefCon, AudioUnitRenderActionFlags *ioA
 		currentPtsLock = [[NSLock alloc] init];
 
 #ifdef OUTPUT_LOG
-		_logFile = fopen("/tmp/CogAudioLog.raw", "wb");
+		NSString *logName = [NSTemporaryDirectory() stringByAppendingPathComponent:@"CogAudioLog.raw"];
+		_logFile = fopen([logName UTF8String], "wb");
 #endif
 	}
 
@@ -837,6 +838,10 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 			CMBlockBufferRef blockBuffer = nil;
 			size_t dataByteSize = samplesRendered * sizeof(float) * streamFormat.mChannelsPerFrame;
 
+#ifdef OUTPUT_LOG
+			fwrite(samplePtr, 1, dataByteSize, _logFile);
+#endif
+
 			status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault, nil, dataByteSize, kCFAllocatorDefault, nil, 0, dataByteSize, kCMBlockBufferAssureMemoryNowFlag, &blockBuffer);
 
 			if(status != noErr || !blockBuffer) {