Problem Problem problem With Voice Recording and pLaying

[newIphoneprogrammer]

	CFStringRef state; 
	UInt32 propertySize = sizeof(CFStringRef); 
//	AudioSessionInitialize(NULL, NULL, NULL, NULL); 
	AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &state);
	if(CFStringGetLength(state) == 0)
//	if(state == 0)
	{ //SILENT
		NSLog(@"Silent switch is on");
	//	create vibrate 
	//	AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
	UInt32 audioCategory = kAudioSessionCategory_MediaPlayback;
	AudioSessionSetProperty( kAudioSessionProperty_AudioCategory, sizeof(UInt32), &audioCategory);
		
	}
	else { //NOT SILENT
		NSLog(@"Silent switch is off");
		
	}

where ever i use Above code i am able to play sound file in Silent mode

but after playing file


when i try to record another voice

i get an error here

	// file url
    [self setupAudioFormat:&recordState.dataFormat];
    CFURLRef fileURL =  CFURLCreateFromFileSystemRepresentation(NULL, (const UInt8 *) [filePath UTF8String], [filePath length], NO);
    // recordState.currentPacket = 0;
    
	// new input queue
    OSStatus status;
    status = AudioQueueNewInput(&recordState.dataFormat, HandleInputBuffer, &recordState, CFRunLoopGetCurrent(),kCFRunLoopCommonModes, 0, &recordState.queue);
    if (status) {CFRelease(fileURL); printf("Could not establish new queue\n"); return NO;}
  
	// create new audio file
    status = AudioFileCreateWithURL(fileURL, kAudioFileAIFFType, &recordState.dataFormat, kAudioFileFlags_EraseFile, &recordState.audioFile);
	CFRelease(fileURL); // thanks august joki
    if (status) {printf("Could not create file to record audio\n"); return NO;}
    
	// figure out the buffer size
    DeriveBufferSize(recordState.queue, recordState.dataFormat, 0.5, &recordState.bufferByteSize);
	
	// allocate those buffers and enqueue them
    for(int i = 0; i < NUM_BUFFERS; i++)
    {
        status = AudioQueueAllocateBuffer(recordState.queue, recordState.bufferByteSize, &recordState.buffers[i]);
        if (status) {printf("Error allocating buffer %d\n", i); return NO;}

        status = AudioQueueEnqueueBuffer(recordState.queue, recordState.buffers[i], 0, NULL);
        if (status) {printf("Error enqueuing buffer %d\n", i); return NO;}
    }
	
	// enable metering
    UInt32 enableMetering = YES;
    status = AudioQueueSetProperty(recordState.queue, kAudioQueueProperty_EnableLevelMetering, &enableMetering,sizeof(enableMetering));
    if (status) {printf("Could not enable metering\n"); return NO;}
    
	// start recording
    status = AudioQueueStart(recordState.queue, NULL);
//	status = 0;
	NSLog(@"%d",status);
    if (status) {printf("Could not start Audio Queue\n"); return NO;}
    recordState.currentPacket = 0;
    recordState.recording = YES;
    return YES;

error :
Could not start Audio Queue


Please solve my problem i will be very thanks for to you