diff --git a/audio/coreaudio.c b/audio/coreaudio.c
index 0a26413..4fb6a01 100644
--- a/audio/coreaudio.c
+++ b/audio/coreaudio.c
@@ -47,6 +47,9 @@ typedef struct coreaudioVoiceOut {
     pthread_mutex_t mutex;
     int isAtexit;
     AudioDeviceID outputDeviceID;
+#if defined(MAC_OS_X_VERSION_10_5) && (MAC_OS_X_VERSION_MIN_REQUIRED>=MAC_OS_X_VERSION_10_5)
+    AudioDeviceIOProcID ioProcID;
+#endif
     UInt32 audioDevicePropertyBufferFrameSize;
     AudioStreamBasicDescription outputStreamBasicDescription;
     int live;
@@ -56,7 +59,7 @@ typedef struct coreaudioVoiceOut {
 
 static void coreaudio_logstatus (OSStatus status)
 {
-    char *str = "BUG";
+    const char *str = "BUG";
 
     switch(status) {
     case kAudioHardwareNoError:
@@ -104,7 +107,7 @@ static void coreaudio_logstatus (OSStatus status)
         break;
 
     default:
-        AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status);
+        AUD_log (AUDIO_CAP, "Reason: status code %d\n", status);
         return;
     }
 
@@ -148,10 +151,21 @@ static inline UInt32 isPlaying (AudioDeviceID outputDeviceID)
 {
     OSStatus status;
     UInt32 result = 0;
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    AudioObjectPropertyAddress propertyAddress = {
+        .mSelector = kAudioDevicePropertyDeviceIsRunning,
+        .mScope    = kAudioObjectPropertyScopeGlobal,
+        .mElement  = kAudioObjectPropertyElementMaster,
+    };
+    UInt32 resultSize = sizeof(result);
+    status = AudioObjectGetPropertyData(outputDeviceID, &propertyAddress,
+                                        0, NULL, &resultSize, &result);
+#else
     UInt32 propertySize = sizeof(outputDeviceID);
     status = AudioDeviceGetProperty(
         outputDeviceID, 0, 0,
         kAudioDevicePropertyDeviceIsRunning, &propertySize, &result);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr(status,
                          "Could not determine whether Device is playing\n");
@@ -307,10 +321,21 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
 
     /* open default output device */
     propertySize = sizeof(core->outputDeviceID);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    AudioObjectPropertyAddress propertyAddress = {
+        .mSelector = kAudioHardwarePropertyDefaultOutputDevice,
+        .mScope    = kAudioObjectPropertyScopeGlobal,
+        .mElement  = kAudioObjectPropertyElementMaster,
+    };
+    status = AudioObjectGetPropertyData(kAudioObjectSystemObject,
+                                        &propertyAddress, 0, NULL,
+                                        &propertySize, &core->outputDeviceID);
+#else
     status = AudioHardwareGetProperty(
         kAudioHardwarePropertyDefaultOutputDevice,
         &propertySize,
         &core->outputDeviceID);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ,
                            "Could not get default output Device\n");
@@ -323,6 +348,11 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
 
     /* get minimum and maximum buffer frame sizes */
     propertySize = sizeof(frameRange);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    propertyAddress.mSelector = kAudioDevicePropertyBufferFrameSizeRange;
+    status = AudioObjectGetPropertyData(core->outputDeviceID, &propertyAddress,
+                                        0, NULL, &propertySize, &frameRange);
+#else
     status = AudioDeviceGetProperty(
         core->outputDeviceID,
         0,
@@ -330,6 +360,7 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         kAudioDevicePropertyBufferFrameSizeRange,
         &propertySize,
         &frameRange);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ,
                            "Could not get device buffer frame range\n");
@@ -350,6 +381,12 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
 
     /* set Buffer Frame Size */
     propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    propertyAddress.mSelector = kAudioDevicePropertyBufferFrameSize;
+    status = AudioObjectSetPropertyData(core->outputDeviceID, &propertyAddress,
+                                        0, NULL, propertySize,
+                                        &core->audioDevicePropertyBufferFrameSize);
+#else
     status = AudioDeviceSetProperty(
         core->outputDeviceID,
         NULL,
@@ -358,15 +395,22 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         kAudioDevicePropertyBufferFrameSize,
         propertySize,
         &core->audioDevicePropertyBufferFrameSize);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ,
-                           "Could not set device buffer frame size %ld\n",
+                           "Could not set device buffer frame size %d\n",
                            core->audioDevicePropertyBufferFrameSize);
         return -1;
     }
 
     /* get Buffer Frame Size */
     propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    propertyAddress.mSelector = kAudioDevicePropertyBufferFrameSize;
+    status = AudioObjectGetPropertyData(core->outputDeviceID, &propertyAddress,
+                                        0, NULL, &propertySize,
+                                        &core->audioDevicePropertyBufferFrameSize);
+#else
     status = AudioDeviceGetProperty(
         core->outputDeviceID,
         0,
@@ -374,6 +418,7 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         kAudioDevicePropertyBufferFrameSize,
         &propertySize,
         &core->audioDevicePropertyBufferFrameSize);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ,
                            "Could not get device buffer frame size\n");
@@ -383,6 +428,12 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
 
     /* get StreamFormat */
     propertySize = sizeof(core->outputStreamBasicDescription);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    propertyAddress.mSelector = kAudioDevicePropertyStreamFormat;
+    status = AudioObjectGetPropertyData(core->outputDeviceID, &propertyAddress,
+                                        0, NULL, &propertySize,
+                                        &core->outputStreamBasicDescription);
+#else
     status = AudioDeviceGetProperty(
         core->outputDeviceID,
         0,
@@ -390,6 +441,7 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         kAudioDevicePropertyStreamFormat,
         &propertySize,
         &core->outputStreamBasicDescription);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ,
                            "Could not get Device Stream properties\n");
@@ -400,6 +452,12 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
     /* set Samplerate */
     core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
     propertySize = sizeof(core->outputStreamBasicDescription);
+#if MAC_OS_X_VERSION_MIN_REQUIRED>MAC_OS_X_VERSION_10_5
+    propertyAddress.mSelector = kAudioDevicePropertyStreamFormat;
+    status = AudioObjectSetPropertyData(core->outputDeviceID, &propertyAddress,
+                                        0, NULL, propertySize,
+                                        &core->outputStreamBasicDescription);
+#else
     status = AudioDeviceSetProperty(
         core->outputDeviceID,
         0,
@@ -408,6 +466,7 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         kAudioDevicePropertyStreamFormat,
         propertySize,
         &core->outputStreamBasicDescription);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
                            as->freq);
@@ -416,7 +475,14 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
     }
 
     /* set Callback */
+#if defined(MAC_OS_X_VERSION_10_5) && (MAC_OS_X_VERSION_MIN_REQUIRED>=MAC_OS_X_VERSION_10_5)
+    status = AudioDeviceCreateIOProcID(core->outputDeviceID,
+                                       audioDeviceIOProc,
+                                       hw,
+                                       &core->ioProcID);
+#else
     status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw);
+#endif
     if (status != kAudioHardwareNoError) {
         coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
         core->outputDeviceID = kAudioDeviceUnknown;
@@ -428,7 +494,11 @@ static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
         status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
         if (status != kAudioHardwareNoError) {
             coreaudio_logerr2 (status, typ, "Could not start playback\n");
+#if defined(MAC_OS_X_VERSION_10_5) && (MAC_OS_X_VERSION_MIN_REQUIRED>=MAC_OS_X_VERSION_10_5)
+            AudioDeviceDestroyIOProcID(core->outputDeviceID, core->ioProcID);
+#else
             AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc);
+#endif
             core->outputDeviceID = kAudioDeviceUnknown;
             return -1;
         }
@@ -453,8 +523,13 @@ static void coreaudio_fini_out (HWVoiceOut *hw)
         }
 
         /* remove callback */
+#if defined(MAC_OS_X_VERSION_10_5) && (MAC_OS_X_VERSION_MIN_REQUIRED>=MAC_OS_X_VERSION_10_5)
+        status = AudioDeviceDestroyIOProcID(core->outputDeviceID,
+                                            core->ioProcID);
+#else
         status = AudioDeviceRemoveIOProc(core->outputDeviceID,
                                          audioDeviceIOProc);
+#endif
         if (status != kAudioHardwareNoError) {
             coreaudio_logerr (status, "Could not remove IOProc\n");
         }
