Added EZAudio framework, already listing available audio input devices and storing selection. Visualization still missing.

CaseLights.xcodeproj/project.pbxproj

 	objects = {
 
 /* Begin PBXBuildFile section */
+		E9101B871C36B11500720A6E /* EZAudioOSX.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = E9101B831C36B0C100720A6E /* EZAudioOSX.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		E9101B881C36B4B100720A6E /* EZAudioOSX.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E9101B831C36B0C100720A6E /* EZAudioOSX.framework */; };
 		E9109B111C2AACF400726111 /* SystemInfoKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E9109B0B1C2AAC1B00726111 /* SystemInfoKit.framework */; };
 		E9109B151C2AAEFD00726111 /* SystemInfoKit.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = E9109B0B1C2AAC1B00726111 /* SystemInfoKit.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		E9109B191C2AAFE100726111 /* GPUStats.m in Sources */ = {isa = PBXBuildFile; fileRef = E9109B181C2AAFE100726111 /* GPUStats.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
+		E9101B801C36B0C100720A6E /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = 469F4CF31B749F7800666A46;
+			remoteInfo = EZAudioiOS;
+		};
+		E9101B821C36B0C100720A6E /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */;
+			proxyType = 2;
+			remoteGlobalIDString = 8A5A4B9C1BBBDCB200A8A048;
+			remoteInfo = EZAudioOSX;
+		};
+		E9101B851C36B10C00720A6E /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */;
+			proxyType = 1;
+			remoteGlobalIDString = 8A5A4B9B1BBBDCB200A8A048;
+			remoteInfo = EZAudioOSX;
+		};
 		E9109B0A1C2AAC1B00726111 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = E9109B051C2AAC1B00726111 /* SystemInfoKit.xcodeproj */;
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
+				E9101B871C36B11500720A6E /* EZAudioOSX.framework in CopyFiles */,
 				E9109B151C2AAEFD00726111 /* SystemInfoKit.framework in CopyFiles */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = EZAudio.xcodeproj; path = EZAudio/EZAudio.xcodeproj; sourceTree = "<group>"; };
 		E9109B051C2AAC1B00726111 /* SystemInfoKit.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = SystemInfoKit.xcodeproj; path = JSystemInfoKit/SystemInfoKit.xcodeproj; sourceTree = "<group>"; };
 		E9109B171C2AAFE100726111 /* GPUStats.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = GPUStats.h; path = CaseLights/GPUStats.h; sourceTree = "<group>"; };
 		E9109B181C2AAFE100726111 /* GPUStats.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = GPUStats.m; path = CaseLights/GPUStats.m; sourceTree = "<group>"; };
 			buildActionMask = 2147483647;
 			files = (
 				E9109B111C2AACF400726111 /* SystemInfoKit.framework in Frameworks */,
+				E9101B881C36B4B100720A6E /* EZAudioOSX.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		E9101B7C1C36B0C100720A6E /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				E9101B811C36B0C100720A6E /* EZAudioiOS.framework */,
+				E9101B831C36B0C100720A6E /* EZAudioOSX.framework */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
 		E9109B061C2AAC1B00726111 /* Products */ = {
 			isa = PBXGroup;
 			children = (
 		E9F13DF51C28B3D3004C6B95 = {
 			isa = PBXGroup;
 			children = (
+				E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */,
 				E9109B051C2AAC1B00726111 /* SystemInfoKit.xcodeproj */,
 				E9F13E001C28B3D3004C6B95 /* CaseLights */,
 				E9F13DFF1C28B3D3004C6B95 /* Products */,
 			buildRules = (
 			);
 			dependencies = (
+				E9101B861C36B10C00720A6E /* PBXTargetDependency */,
 				E9109B131C2AAD2E00726111 /* PBXTargetDependency */,
 			);
 			name = CaseLights;
 			projectDirPath = "";
 			projectReferences = (
 				{
+					ProductGroup = E9101B7C1C36B0C100720A6E /* Products */;
+					ProjectRef = E9101B7B1C36B0C100720A6E /* EZAudio.xcodeproj */;
+				},
+				{
 					ProductGroup = E9109B061C2AAC1B00726111 /* Products */;
 					ProjectRef = E9109B051C2AAC1B00726111 /* SystemInfoKit.xcodeproj */;
 				},
 /* End PBXProject section */
 
 /* Begin PBXReferenceProxy section */
+		E9101B811C36B0C100720A6E /* EZAudioiOS.framework */ = {
+			isa = PBXReferenceProxy;
+			fileType = wrapper.framework;
+			path = EZAudioiOS.framework;
+			remoteRef = E9101B801C36B0C100720A6E /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
+		E9101B831C36B0C100720A6E /* EZAudioOSX.framework */ = {
+			isa = PBXReferenceProxy;
+			fileType = wrapper.framework;
+			path = EZAudioOSX.framework;
+			remoteRef = E9101B821C36B0C100720A6E /* PBXContainerItemProxy */;
+			sourceTree = BUILT_PRODUCTS_DIR;
+		};
 		E9109B0B1C2AAC1B00726111 /* SystemInfoKit.framework */ = {
 			isa = PBXReferenceProxy;
 			fileType = wrapper.framework;
 /* End PBXSourcesBuildPhase section */
 
 /* Begin PBXTargetDependency section */
+		E9101B861C36B10C00720A6E /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			name = EZAudioOSX;
+			targetProxy = E9101B851C36B10C00720A6E /* PBXContainerItemProxy */;
+		};
 		E9109B131C2AAD2E00726111 /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			name = SystemInfoKit;
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_BUNDLE_IDENTIFIER = de.xythobuz.CaseLights;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				USER_HEADER_SEARCH_PATHS = "JSystemInfoKit/**";
+				USER_HEADER_SEARCH_PATHS = "JSystemInfoKit/** EZAudio/EZAudio/**";
 			};
 			name = Debug;
 		};
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_BUNDLE_IDENTIFIER = de.xythobuz.CaseLights;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				USER_HEADER_SEARCH_PATHS = "JSystemInfoKit/**";
+				USER_HEADER_SEARCH_PATHS = "JSystemInfoKit/** EZAudio/EZAudio/**";
 			};
 			name = Release;
 		};

CaseLights/AppDelegate.h

 
 #import <Cocoa/Cocoa.h>
 
+#import "EZAudio.h"
+#import "SystemInfoKit/SystemInfoKit.h"
+
 @class Serial;
 
-@interface AppDelegate : NSObject <NSApplicationDelegate>
+@interface AppDelegate : NSObject <NSApplicationDelegate, EZMicrophoneDelegate>
 
 @property (weak) IBOutlet NSMenu *statusMenu;
 @property (weak) IBOutlet NSApplication *application;
 @property (weak) IBOutlet NSMenu *menuVisualizations;
 @property (weak) IBOutlet NSMenuItem *menuItemDisplays;
 @property (weak) IBOutlet NSMenu *menuDisplays;
+@property (weak) IBOutlet NSMenuItem *menuItemAudio;
+@property (weak) IBOutlet NSMenu *menuAudio;
 @property (weak) IBOutlet NSMenu *menuPorts;
 
 @property (weak) IBOutlet NSMenuItem *buttonOff;

CaseLights/AppDelegate.m

 #import "GPUStats.h"
 #import "Screenshot.h"
 
-#import "SystemInfoKit/SystemInfoKit.h"
-
+// These are the values stored persistently in the preferences
 #define PREF_SERIAL_PORT @"SerialPort"
 #define PREF_LIGHTS_STATE @"LightState"
+// LED Mode contains the last selected mode as menu item text
 #define PREF_LED_MODE @"LEDMode"
 #define PREF_BRIGHTNESS @"Brightness"
 #define PREF_COLOR @"ManualColor"
 #define TEXT_RGB_FADE @"RGB Fade"
 #define TEXT_HSV_FADE @"HSV Fade"
 #define TEXT_RANDOM @"Random"
+#define TEXT_TEMPLATE_AUDIO @"AudioDevice_%@"
 
+// SMC keys are checked for existence and used for reading
 #define KEY_CPU_TEMPERATURE @"TC0D"
 #define KEY_GPU_TEMPERATURE @"TG0D"
 
 #define AVERAGE_COLOR_PERFORMANCE_INC 10
 #define DISPLAY_DELAY 0.1
 
+// Used to identify selected menu items
+// displays are all tags >= 0
+#define MENU_ITEM_TAG_NOTHING -1
+#define MENU_ITEM_TAG_AUDIO -2
+
 @interface AppDelegate ()
 
 @property (strong) NSStatusItem *statusItem;
 @property (strong) NSTimer *animation;
 @property (strong) Serial *serial;
 @property (strong) NSMenuItem *lastLEDMode;
+@property (strong) EZMicrophone *microphone;
 
 @end
 
 @synthesize statusMenu, application;
 @synthesize menuColors, menuAnimations, menuVisualizations, menuPorts;
 @synthesize menuItemDisplays, menuDisplays;
+@synthesize menuItemAudio, menuAudio;
 @synthesize buttonOff, buttonLights;
 @synthesize brightnessItem, brightnessSlider, brightnessLabel;
 @synthesize statusItem, statusImage;
 @synthesize staticColors, animation;
-@synthesize serial, lastLEDMode;
+@synthesize serial, lastLEDMode, microphone;
 @synthesize menuItemColor;
 
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
     serial = [[Serial alloc] init];
     lastLEDMode = nil;
     animation = nil;
+    microphone = nil;
     
     // Prepare status bar menu
     statusImage = [NSImage imageNamed:@"MenuIcon"];
         for (int i = 0; i < [ports count]; i++) {
             // Add Menu Item for this port
             NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:[ports objectAtIndex:i] action:@selector(selectedSerialPort:) keyEquivalent:@""];
-            [item setTag:-1];
+            [item setTag:MENU_ITEM_TAG_NOTHING];
             [menuPorts addItem:item];
             
             // Set Enabled if it was used the last time
                     nil];
     for (NSString *key in [staticColors allKeys]) {
         NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:key action:@selector(selectedVisualization:) keyEquivalent:@""];
-        [item setTag:-1];
+        [item setTag:MENU_ITEM_TAG_NOTHING];
         if ([key isEqualToString:lastMode]) {
             [self selectedVisualization:item];
         }
         }
         [menuItemColor setState:NSOnState];
     }
-    [menuItemColor setTag:-1];
+    [menuItemColor setTag:MENU_ITEM_TAG_NOTHING];
     [menuColors addItem:menuItemColor];
     
     // Prepare animations menu
                                  nil];
     for (NSString *key in animationStrings) {
         NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:key action:@selector(selectedVisualization:) keyEquivalent:@""];
-        [item setTag:-1];
+        [item setTag:MENU_ITEM_TAG_NOTHING];
         if ([key isEqualToString:lastMode]) {
             [self selectedVisualization:item];
         }
     
     // Add CPU Usage menu item
     NSMenuItem *cpuUsageItem = [[NSMenuItem alloc] initWithTitle:TEXT_CPU_USAGE action:@selector(selectedVisualization:) keyEquivalent:@""];
-    [cpuUsageItem setTag:-1];
+    [cpuUsageItem setTag:MENU_ITEM_TAG_NOTHING];
     if ([lastMode isEqualToString:TEXT_CPU_USAGE]) {
         [self selectedVisualization:cpuUsageItem];
     }
     
     // Add Memory Usage item
     NSMenuItem *memoryUsageItem = [[NSMenuItem alloc] initWithTitle:TEXT_RAM_USAGE action:@selector(selectedVisualization:) keyEquivalent:@""];
-    [memoryUsageItem setTag:-1];
+    [memoryUsageItem setTag:MENU_ITEM_TAG_NOTHING];
     if ([lastMode isEqualToString:TEXT_RAM_USAGE]) {
         [self selectedVisualization:memoryUsageItem];
     }
         NSLog(@"Error reading GPU information\n");
     } else {
         NSMenuItem *itemUsage = [[NSMenuItem alloc] initWithTitle:TEXT_GPU_USAGE action:@selector(selectedVisualization:) keyEquivalent:@""];
-        [itemUsage setTag:-1];
+        [itemUsage setTag:MENU_ITEM_TAG_NOTHING];
         if ([lastMode isEqualToString:TEXT_GPU_USAGE]) {
             [self selectedVisualization:itemUsage];
         }
         [menuVisualizations addItem:itemUsage];
         
         NSMenuItem *itemVRAM = [[NSMenuItem alloc] initWithTitle:TEXT_VRAM_USAGE action:@selector(selectedVisualization:) keyEquivalent:@""];
-        [itemVRAM setTag:-1];
+        [itemVRAM setTag:MENU_ITEM_TAG_NOTHING];
         if ([lastMode isEqualToString:TEXT_VRAM_USAGE]) {
             [self selectedVisualization:itemVRAM];
         }
 
         if ([key isEqualToString:KEY_CPU_TEMPERATURE]) {
             NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:TEXT_CPU_TEMPERATURE action:@selector(selectedVisualization:) keyEquivalent:@""];
-            [item setTag:-1];
+            [item setTag:MENU_ITEM_TAG_NOTHING];
             if ([lastMode isEqualToString:TEXT_CPU_TEMPERATURE]) {
                 [self selectedVisualization:item];
             }
         
         if ([key isEqualToString:KEY_GPU_TEMPERATURE]) {
             NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:TEXT_GPU_TEMPERATURE action:@selector(selectedVisualization:) keyEquivalent:@""];
-            [item setTag:-1];
+            [item setTag:MENU_ITEM_TAG_NOTHING];
             if ([lastMode isEqualToString:TEXT_GPU_TEMPERATURE]) {
                 [self selectedVisualization:item];
             }
     [Screenshot init:self];
     NSArray *displayIDs = [Screenshot listDisplays];
     [self updateDisplayUI:displayIDs];
+    
+    // List available audio input devices and add menu items
+    NSArray *inputDevices = [EZAudioDevice inputDevices];
+    [menuAudio removeAllItems];
+    for (int i = 0; i < [inputDevices count]; i++) {
+        EZAudioDevice *dev = [inputDevices objectAtIndex:i];
+        
+#ifdef DEBUG
+        NSLog(@"Audio input device: \"%@\"\n", [dev name]);
+#endif
+        
+        NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:[dev name] action:@selector(selectedVisualization:) keyEquivalent:@""];
+        [item setTag:MENU_ITEM_TAG_AUDIO];
+        NSString *lastModeString = [NSString stringWithFormat:TEXT_TEMPLATE_AUDIO, [dev name]];
+        if ([lastModeString isEqualToString:lastMode]) {
+            [self selectedVisualization:item];
+        }
+        [menuAudio addItem:item];
+    }
+    if ([inputDevices count] > 0) {
+        [menuItemAudio setHidden:NO];
+    }
 }
 
 - (void)applicationWillTerminate:(NSNotification *)aNotification {
         animation = nil;
     }
     
+    // Stop previous audio data retrieval
+    if (microphone != nil) {
+        [microphone stopFetchingAudio];
+        microphone = nil;
+    }
+    
     // Remove display callback
     [Screenshot close:self];
     
         animation = nil;
     }
     
+    // Stop previous audio data retrieval
+    if (microphone != nil) {
+        [microphone stopFetchingAudio];
+        microphone = nil;
+    }
+    
     // Turn off all other LED menu items
     if (menuColors != nil) {
         for (int i = 0; i < [menuColors numberOfItems]; i++) {
             [[menuVisualizations itemAtIndex:i] setState:NSOffState];
         }
     }
+    if (menuAudio != nil) {
+        for (int i = 0; i < [menuAudio numberOfItems]; i++) {
+            [[menuAudio itemAtIndex:i] setState:NSOffState];
+        }
+    }
     if (menuDisplays != nil) {
         for (int i = 0; i < [menuDisplays numberOfItems]; i++) {
             [[menuDisplays itemAtIndex:i] setState:NSOffState];
 }
 
 - (IBAction)relistSerialPorts:(id)sender {
+    // Refill audio device list
+    NSArray *inputDevices = [EZAudioDevice inputDevices];
+    [menuAudio removeAllItems];
+    for (int i = 0; i < [inputDevices count]; i++) {
+        EZAudioDevice *dev = [inputDevices objectAtIndex:i];
+        NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:[dev name] action:@selector(selectedVisualization:) keyEquivalent:@""];
+        [item setTag:MENU_ITEM_TAG_AUDIO];
+        NSString *lastModeString = [NSString stringWithFormat:TEXT_TEMPLATE_AUDIO, [dev name]];
+        if ([lastModeString isEqualToString:[[NSUserDefaults standardUserDefaults] stringForKey:PREF_LED_MODE]]) {
+            [self selectedVisualization:item];
+        }
+        [menuAudio addItem:item];
+    }
+    if ([inputDevices count] > 0) {
+        [menuItemAudio setHidden:NO];
+    } else {
+        [menuItemAudio setHidden:YES];
+    }
+    
     // Refill port list
     NSArray *ports = [Serial listSerialPorts];
     [menuPorts removeAllItems];
     for (int i = 0; i < [ports count]; i++) {
         // Add Menu Item for this port
         NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:[ports objectAtIndex:i] action:@selector(selectedSerialPort:) keyEquivalent:@""];
-        [item setTag:-1];
+        [item setTag:MENU_ITEM_TAG_NOTHING];
         [menuPorts addItem:item];
         
         // Mark it if it is currently open
     [application orderFrontColorPanel:cp];
 }
 
-- (void)colorSelected:(id)sender {
+- (void)colorSelected:(NSColorPanel *)sender {
     [self setLightsColor:[sender color]];
 }
 
             [animation invalidate];
             animation = nil;
         }
+        
+        // Stop previous audio data retrieval
+        if (microphone != nil) {
+            [microphone stopFetchingAudio];
+            microphone = nil;
+        }
 
         // Turn off all other LED menu items
         for (int i = 0; i < [menuColors numberOfItems]; i++) {
             }
             [[menuVisualizations itemAtIndex:i] setState:NSOffState];
         }
+        for (int i = 0; i < [menuAudio numberOfItems]; i++) {
+            if ([[menuAudio itemAtIndex:i] state] == NSOnState) {
+                lastLEDMode = [menuAudio itemAtIndex:i];
+            }
+            [[menuAudio itemAtIndex:i] setState:NSOffState];
+        }
         for (int i = 0; i < [menuDisplays numberOfItems]; i++) {
             if ([[menuDisplays itemAtIndex:i] state] == NSOnState) {
                 lastLEDMode = [menuDisplays itemAtIndex:i];
         animation = nil;
     }
     
+    // Stop previous audio data retrieval
+    if (microphone != nil) {
+        [microphone stopFetchingAudio];
+        microphone = nil;
+    }
+    
     // Schedule next invocation for this animation...
     if ([mode isEqualToString:TEXT_GPU_USAGE]) {
         animation = [NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(visualizeGPUUsage:) userInfo:mode repeats:YES];
         animation = nil;
     }
     
+    // Stop previous audio data retrieval
+    if (microphone != nil) {
+        [microphone stopFetchingAudio];
+        microphone = nil;
+    }
+    
     // Schedule next invocation for this animation...
     animation = [NSTimer scheduledTimerWithTimeInterval:DISPLAY_DELAY target:self selector:@selector(visualizeDisplay:) userInfo:[NSNumber numberWithInteger:[sender tag]] repeats:YES];
     
             [[menuVisualizations itemAtIndex:i] setState:NSOffState];
         }
     }
+    if (menuAudio != nil) {
+        for (int i = 0; i < [menuAudio numberOfItems]; i++) {
+            [[menuAudio itemAtIndex:i] setState:NSOffState];
+        }
+    }
     if (menuDisplays != nil) {
         for (int i = 0; i < [menuDisplays numberOfItems]; i++) {
             [[menuDisplays itemAtIndex:i] setState:NSOffState];
     
     // Check if it is a display
     BOOL found = NO;
-    if ([sender tag] > -1) {
+    if ([sender tag] > MENU_ITEM_TAG_NOTHING) {
         found = YES;
         [self displayVisualization:sender];
     }
     
+    // Check if it is an audio input device
+    if ((found == NO) && ([sender tag] == MENU_ITEM_TAG_AUDIO)) {
+        found = YES;
+        BOOL foundDev = NO;
+        NSArray *audioDevices = [EZAudioDevice inputDevices];
+        for (int  i = 0; i < [audioDevices count]; i++) {
+            EZAudioDevice *dev = [audioDevices objectAtIndex:i];
+            if ([[dev name] isEqualToString:[sender title]]) {
+                // Found device
+                foundDev = YES;
+                if (microphone != nil) {
+                    [microphone stopFetchingAudio];
+                    microphone = nil;
+                }
+                microphone = [EZMicrophone microphoneWithDelegate:self];
+                [microphone setDevice:dev];
+                [microphone startFetchingAudio];
+                break;
+            }
+        }
+        if (foundDev == NO) {
+            NSLog(@"Couldn't find device \"%@\"\n", [sender title]);
+            [sender setState:NSOffState];
+            return; // Don't store new mode
+        }
+    }
+    
     // Check if it is the manual color select item
-    if ([sender.title isEqualToString:TEXT_MANUAL]) {
+    if ((found == NO) && ([sender.title isEqualToString:TEXT_MANUAL])) {
         found = YES;
         [self colorSelected:[NSColorPanel sharedColorPanel]];
     }
                     animation = nil;
                 }
                 
+                // Stop previous audio data retrieval
+                if (microphone != nil) {
+                    [microphone stopFetchingAudio];
+                    microphone = nil;
+                }
+                
                 NSColor *color = [staticColors valueForKey:key];
                 unsigned char red = [color redComponent] * 255;
                 unsigned char green = [color greenComponent] * 255;
     
     // Store changed value in preferences
     NSUserDefaults *store = [NSUserDefaults standardUserDefaults];
-    [store setObject:[sender title] forKey:PREF_LED_MODE];
+    if ([sender tag] == MENU_ITEM_TAG_AUDIO) {
+        // Prepend text for audio device names
+        NSString *tmp = [NSString stringWithFormat:TEXT_TEMPLATE_AUDIO, [sender title]];
+        [store setObject:tmp forKey:PREF_LED_MODE];
+    } else {
+        [store setObject:[sender title] forKey:PREF_LED_MODE];
+    }
     [store synchronize];
     
 #ifdef DEBUG
                 [self selectedVisualization:[menuVisualizations itemAtIndex:i]];
             }
         }
+        for (int i = 0; i < [menuAudio numberOfItems]; i++) {
+            if ([[menuAudio itemAtIndex:i] state] == NSOnState) {
+                [self selectedVisualization:[menuAudio itemAtIndex:i]];
+            }
+        }
+        for (int i = 0; i < [menuDisplays numberOfItems]; i++) {
+            if ([[menuDisplays itemAtIndex:i] state] == NSOnState) {
+                [self selectedVisualization:[menuDisplays itemAtIndex:i]];
+            }
+        }
         if ([buttonOff state] == NSOnState) {
             [buttonOff setState:NSOffState];
             [self turnLEDsOff:buttonOff];
     [application orderFrontStandardAboutPanel:self];
 }
 
+- (void)updateBuffer:(float *)buffer withBufferSize:(UInt32)bufferSize {
+    if (microphone == nil) {
+        return; // Old buffer from before we changed mode
+    }
+    
+    // TODO visualize sound data somehow
+    //NSLog(@".");
+}
+
+// ------------------------------------------------------
+// ----------------- Microphone Delegate ----------------
+// ------------------------------------------------------
+
+- (void)microphone:(EZMicrophone *)microphone hasAudioReceived:(float **)buffer withBufferSize:(UInt32)bufferSize withNumberOfChannels:(UInt32)numberOfChannels {
+    __weak typeof (self) weakSelf = self;
+    
+    if (weakSelf.microphone == nil) {
+        return;
+    }
+    
+    // Getting audio data as an array of float buffer arrays that can be fed into the
+    // EZAudioPlot, EZAudioPlotGL, or whatever visualization you would like to do with
+    // the microphone data.
+    dispatch_async(dispatch_get_main_queue(),^{
+        // buffer[0] = left channel, buffer[1] = right channel
+        [weakSelf updateBuffer:buffer[0] withBufferSize:bufferSize];
+    });
+}
+
+- (void)microphone:(EZMicrophone *)microphone changedDevice:(EZAudioDevice *)device {
+    // This is not always guaranteed to occur on the main thread so make sure you
+    // wrap it in a GCD block
+    dispatch_async(dispatch_get_main_queue(), ^{
+        NSLog(@"Changed audio input device: %@", [device name]);
+    });
+}
+
 // ------------------------------------------------------
 // ------------------- Visualizations -------------------
 // ------------------------------------------------------

CaseLights/Base.lproj/MainMenu.xib

                 <outlet property="buttonLights" destination="tLQ-BA-kGu" id="FZv-Ju-l7n"/>
                 <outlet property="buttonOff" destination="gT4-tm-Hvn" id="EEv-lf-Qo7"/>
                 <outlet property="menuAnimations" destination="FJm-ND-abA" id="iGI-Hg-tms"/>
+                <outlet property="menuAudio" destination="KUj-jy-iwd" id="ct3-CS-KXG"/>
                 <outlet property="menuColors" destination="ZKz-ek-t6c" id="B2S-fy-Ca6"/>
                 <outlet property="menuDisplays" destination="Qgx-6D-9dl" id="MaT-c8-dLX"/>
+                <outlet property="menuItemAudio" destination="gx8-7I-Lmt" id="LjY-fB-ViX"/>
                 <outlet property="menuItemDisplays" destination="1Cz-Xz-d16" id="rRz-n5-n2P"/>
                 <outlet property="menuPorts" destination="lFU-D0-M5p" id="pHd-AA-S3J"/>
                 <outlet property="menuVisualizations" destination="yZl-ae-7SI" id="b2b-dW-mvy"/>
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <menu key="submenu" title="Displays" id="Qgx-6D-9dl"/>
                 </menuItem>
+                <menuItem title="Audio Inputs" hidden="YES" id="gx8-7I-Lmt">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Audio Inputs" id="KUj-jy-iwd"/>
+                </menuItem>
                 <menuItem title="Brightness" id="Oh0-1U-yDg">
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <menu key="submenu" title="Brightness" id="jRu-sM-3xB">
                         </items>
                     </menu>
                 </menuItem>
-                <menuItem title="Relist Serial Ports" id="jVd-gl-Z6F">
+                <menuItem title="Relist Devices" id="jVd-gl-Z6F">
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <connections>
                         <action selector="relistSerialPorts:" target="Voe-Tx-rLC" id="iFU-PL-xR8"/>

CaseLights/Info.plist

 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>172</string>
+	<string>180</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>