diff --git a/lib-src/portaudio-v19/include/pa_win_ds.h b/lib-src/portaudio-v19/include/pa_win_ds.h
index 5d3864168..f8197e531 100644
--- a/lib-src/portaudio-v19/include/pa_win_ds.h
+++ b/lib-src/portaudio-v19/include/pa_win_ds.h
@@ -87,6 +87,22 @@ typedef struct PaWinDirectSoundStreamInfo{
 }PaWinDirectSoundStreamInfo;
 
 
+/** Retrieve the GUID of the input device.
+
+ @param stream The stream to query.
+
+ @return A pointer to the GUID, or NULL if none.
+*/
+LPGUID PaWinDS_GetStreamInputGUID( PaStream* s );
+
+/** Retrieve the GUID of the output device.
+
+ @param stream The stream to query.
+
+ @return A pointer to the GUID, or NULL if none.
+*/
+LPGUID PaWinDS_GetStreamOutputGUID( PaStream* s );
+
 
 #ifdef __cplusplus
 }
diff --git a/lib-src/portaudio-v19/include/pa_win_wasapi.h b/lib-src/portaudio-v19/include/pa_win_wasapi.h
index 9b827d1ea..a4416b121 100644
--- a/lib-src/portaudio-v19/include/pa_win_wasapi.h
+++ b/lib-src/portaudio-v19/include/pa_win_wasapi.h
@@ -548,6 +548,22 @@ PaError PaWasapi_SetDefaultInterfaceId( unsigned short *pId, int bOutput );
 */
 PaError PaWasapi_SetStreamStateHandler( PaStream *pStream, PaWasapiStreamStateCallback fnStateHandler, void *pUserData );
 
+/** Returns Windows device ID for input stream
+
+ @param  pStream Pointer to PaStream to query.
+
+ @return non-null value pointing to static device ID
+*/
+const wchar_t *PaWasapi_GetInputDeviceID( PaStream *s );
+
+/** Returns Windows device ID for output stream
+
+ @param  pStream Pointer to PaStream to query.
+
+ @return non-null value pointing to static device ID
+*/
+const wchar_t *PaWasapi_GetOutputDeviceID( PaStream *s );
+
 
 /*
     IMPORTANT:
diff --git a/lib-src/portaudio-v19/include/portaudio.h b/lib-src/portaudio-v19/include/portaudio.h
index 738080d43..ae1cbe280 100644
--- a/lib-src/portaudio-v19/include/portaudio.h
+++ b/lib-src/portaudio-v19/include/portaudio.h
@@ -1197,6 +1197,15 @@ signed long Pa_GetStreamReadAvailable( PaStream* stream );
 signed long Pa_GetStreamWriteAvailable( PaStream* stream );
 
 
+/** Retrieve the host type handling an open stream.
+
+ @return Returns a non-negative value representing the host API type
+ handling an open stream or, a PaErrorCode (which are always negative)
+ if PortAudio is not initialized or an error is encountered.
+*/
+PaHostApiTypeId Pa_GetStreamHostApiType( PaStream* stream );
+
+
 /* Miscellaneous utilities */
 
 
diff --git a/lib-src/portaudio-v19/src/common/pa_front.c b/lib-src/portaudio-v19/src/common/pa_front.c
index 9d30f4837..b4b318692 100644
--- a/lib-src/portaudio-v19/src/common/pa_front.c
+++ b/lib-src/portaudio-v19/src/common/pa_front.c
@@ -1257,8 +1257,10 @@ PaError Pa_OpenStream( PaStream** stream,
                                   hostApiInputParametersPtr, hostApiOutputParametersPtr,
                                   sampleRate, framesPerBuffer, streamFlags, streamCallback, userData );
 
-    if( result == paNoError )
+    if( result == paNoError ) {
         AddOpenStream( *stream );
+        PA_STREAM_REP(*stream)->hostApiType = hostApi->info.type;
+    }
 
 
     PA_LOGAPI(("Pa_OpenStream returned:\n" ));
@@ -1770,6 +1772,32 @@ signed long Pa_GetStreamWriteAvailable( PaStream* stream )
     return result;
 }
 
+PaHostApiTypeId Pa_GetStreamHostApiType( PaStream* stream )
+{
+    PaError error = PaUtil_ValidateStreamPointer( stream );
+    PaHostApiTypeId result;
+
+#ifdef PA_LOG_API_CALLS
+    PaUtil_DebugPrint("Pa_GetStreamHostApiType called:\n" );
+    PaUtil_DebugPrint("\tPaStream* stream: 0x%p\n", stream );
+#endif
+
+    if( error == paNoError )
+    {
+        result = PA_STREAM_REP(stream)->hostApiType;
+    }
+    else
+    {
+        result = (PaHostApiTypeId) error;
+    }
+
+#ifdef PA_LOG_API_CALLS
+    PaUtil_DebugPrint("Pa_GetStreamHostApiType returned:\n" );
+    PaUtil_DebugPrint("\tPaError: %d ( %s )\n\n", result, Pa_GetErrorText( result ) );
+#endif
+
+    return result;
+}
 
 PaError Pa_GetSampleSize( PaSampleFormat format )
 {
diff --git a/lib-src/portaudio-v19/src/common/pa_stream.c b/lib-src/portaudio-v19/src/common/pa_stream.c
index 03a0ee6ee..c4376f93b 100644
--- a/lib-src/portaudio-v19/src/common/pa_stream.c
+++ b/lib-src/portaudio-v19/src/common/pa_stream.c
@@ -93,6 +93,8 @@ void PaUtil_InitializeStreamRepresentation( PaUtilStreamRepresentation *streamRe
     streamRepresentation->streamInfo.inputLatency = 0.;
     streamRepresentation->streamInfo.outputLatency = 0.;
     streamRepresentation->streamInfo.sampleRate = 0.;
+
+    streamRepresentation->hostApiType = 0;
 }
 
 
diff --git a/lib-src/portaudio-v19/src/common/pa_stream.h b/lib-src/portaudio-v19/src/common/pa_stream.h
index 678e2ad5e..70572c752 100644
--- a/lib-src/portaudio-v19/src/common/pa_stream.h
+++ b/lib-src/portaudio-v19/src/common/pa_stream.h
@@ -152,6 +152,7 @@ typedef struct PaUtilStreamRepresentation {
     PaStreamFinishedCallback *streamFinishedCallback;
     void *userData;
     PaStreamInfo streamInfo;
+    PaHostApiTypeId hostApiType;
 } PaUtilStreamRepresentation;
 
 
diff --git a/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c b/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c
index 584cde890..5d44ace39 100644
--- a/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c
+++ b/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c
@@ -621,6 +621,7 @@ typedef struct
     StreamDirection streamDir;
 
     snd_pcm_channel_area_t *channelAreas;  /* Needed for channel adaption */
+    int card;
 } PaAlsaStreamComponent;
 
 /* Implementation specific stream structure */
@@ -1874,6 +1875,7 @@ static PaError PaAlsaStreamComponent_Initialize( PaAlsaStreamComponent *self, Pa
     PaError result = paNoError;
     PaSampleFormat userSampleFormat = params->sampleFormat, hostSampleFormat = paNoError;
     assert( params->channelCount > 0 );
+    snd_pcm_info_t* pcmInfo;
 
     /* Make sure things have an initial value */
     memset( self, 0, sizeof (PaAlsaStreamComponent) );
@@ -1902,6 +1904,9 @@ static PaError PaAlsaStreamComponent_Initialize( PaAlsaStreamComponent *self, Pa
     PA_ENSURE( AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm ) );
     self->nfds = alsa_snd_pcm_poll_descriptors_count( self->pcm );
 
+    snd_pcm_info_alloca( &pcmInfo );
+    self->card = snd_pcm_info_get_card( pcmInfo );
+
     PA_ENSURE( hostSampleFormat = PaUtil_SelectClosestAvailableFormat( GetAvailableFormats( self->pcm ), userSampleFormat ) );
 
     self->hostSampleFormat = hostSampleFormat;
@@ -4605,9 +4610,7 @@ PaError PaAlsa_GetStreamInputCard( PaStream* s, int* card )
     /* XXX: More descriptive error? */
     PA_UNLESS( stream->capture.pcm, paDeviceUnavailable );
 
-    alsa_snd_pcm_info_alloca( &pcmInfo );
-    PA_ENSURE( alsa_snd_pcm_info( stream->capture.pcm, pcmInfo ) );
-    *card = alsa_snd_pcm_info_get_card( pcmInfo );
+    *card = stream->capture.card;
 
 error:
     return result;
@@ -4624,9 +4627,7 @@ PaError PaAlsa_GetStreamOutputCard( PaStream* s, int* card )
     /* XXX: More descriptive error? */
     PA_UNLESS( stream->playback.pcm, paDeviceUnavailable );
 
-    alsa_snd_pcm_info_alloca( &pcmInfo );
-    PA_ENSURE( alsa_snd_pcm_info( stream->playback.pcm, pcmInfo ) );
-    *card = alsa_snd_pcm_info_get_card( pcmInfo );
+    *card = stream->capture.card;
 
 error:
     return result;
diff --git a/lib-src/portaudio-v19/src/hostapi/dsound/pa_win_ds.c b/lib-src/portaudio-v19/src/hostapi/dsound/pa_win_ds.c
index 204004d84..63e9984c4 100644
--- a/lib-src/portaudio-v19/src/hostapi/dsound/pa_win_ds.c
+++ b/lib-src/portaudio-v19/src/hostapi/dsound/pa_win_ds.c
@@ -257,6 +257,7 @@ typedef struct PaWinDsStream
 #endif
 
 /* Output */
+    LPGUID               pOutputGuid;
     LPDIRECTSOUND        pDirectSound;
     LPDIRECTSOUNDBUFFER  pDirectSoundPrimaryBuffer;
     LPDIRECTSOUNDBUFFER  pDirectSoundOutputBuffer;
@@ -272,6 +273,7 @@ typedef struct PaWinDsStream
     INT                  finalZeroBytesWritten; /* used to determine when we've flushed the whole buffer */
 
 /* Input */
+    LPGUID               pInputGuid;
     LPDIRECTSOUNDCAPTURE pDirectSoundCapture;
     LPDIRECTSOUNDCAPTUREBUFFER   pDirectSoundInputBuffer;
     INT                  inputFrameSizeBytes;
@@ -1885,8 +1887,8 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
     PaWinDsDeviceInfo *inputWinDsDeviceInfo, *outputWinDsDeviceInfo;
     PaDeviceInfo *inputDeviceInfo, *outputDeviceInfo;
     int inputChannelCount, outputChannelCount;
-    PaSampleFormat inputSampleFormat, outputSampleFormat;
-    PaSampleFormat hostInputSampleFormat, hostOutputSampleFormat;
+    PaSampleFormat inputSampleFormat = 0, outputSampleFormat = 0;
+    PaSampleFormat hostInputSampleFormat = 0, hostOutputSampleFormat = 0;
     int userRequestedHostInputBufferSizeFrames = 0;
     int userRequestedHostOutputBufferSizeFrames = 0;
     unsigned long suggestedInputLatencyFrames, suggestedOutputLatencyFrames;
@@ -2177,6 +2179,13 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
                 goto error;
             }
 
+            /* Portmixer support - fill in the GUID of the output stream */
+            stream->pOutputGuid = outputWinDsDeviceInfo->lpGUID;
+            if( stream->pOutputGuid == NULL )
+            {
+               stream->pOutputGuid = (GUID *) &DSDEVID_DefaultPlayback;
+            }
+
             /* Calculate value used in latency calculation to avoid real-time divides. */
             stream->secondsPerHostByte = 1.0 /
                 (stream->bufferProcessor.bytesPerHostOutputSample *
@@ -2218,6 +2227,13 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
                 result = paBufferTooBig;
                 goto error;
             }
+
+            /* Portmixer support - store the GUID of the input stream */
+            stream->pInputGuid = inputWinDsDeviceInfo->lpGUID;
+            if( stream->pInputGuid == NULL )
+            {
+               stream->pInputGuid = (GUID *)&DSDEVID_DefaultCapture;
+            }
         }
 
         /* open/create the DirectSound buffers */
@@ -2261,6 +2277,12 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
 
         if( outputParameters && !stream->pDirectSoundOutputBuffer )
         {
+            stream->pOutputGuid = outputWinDsDeviceInfo->lpGUID;
+            if( stream->pOutputGuid == NULL )
+            {
+               stream->pOutputGuid = (GUID *) &DSDEVID_DefaultPlayback;
+            }
+
             hr = InitOutputBuffer( stream,
                                        (PaWinDsDeviceInfo*)hostApi->deviceInfos[outputParameters->device],
                                        hostOutputSampleFormat,
@@ -3269,3 +3291,18 @@ static signed long GetStreamWriteAvailable( PaStream* s )
     return 0;
 }
 
+/***********************************************************************************/
+LPGUID PaWinDS_GetStreamInputGUID( PaStream* s )
+{
+    PaWinDsStream *stream = (PaWinDsStream*)s;
+
+   return stream->pInputGuid;
+}
+
+/***********************************************************************************/
+LPGUID PaWinDS_GetStreamOutputGUID( PaStream* s )
+{
+    PaWinDsStream *stream = (PaWinDsStream*)s;
+
+    return stream->pOutputGuid;
+}
diff --git a/lib-src/portaudio-v19/src/hostapi/oss/pa_unix_oss.c b/lib-src/portaudio-v19/src/hostapi/oss/pa_unix_oss.c
index 51e963048..f257d8039 100644
--- a/lib-src/portaudio-v19/src/hostapi/oss/pa_unix_oss.c
+++ b/lib-src/portaudio-v19/src/hostapi/oss/pa_unix_oss.c
@@ -2043,3 +2043,26 @@ error:
 #endif
 }
 
+const char *PaOSS_GetStreamInputDevice( PaStream* s )
+{
+    PaOssStream *stream = (PaOssStream*)s;
+
+    if( stream->capture )
+    {
+      return stream->capture->devName;
+    }
+
+   return NULL;
+}
+
+const char *PaOSS_GetStreamOutputDevice( PaStream* s )
+{
+    PaOssStream *stream = (PaOssStream*)s;
+
+    if( stream->playback )
+    {
+      return stream->playback->devName;
+    }
+
+   return NULL;
+}
diff --git a/lib-src/portaudio-v19/src/hostapi/wasapi/pa_win_wasapi.c b/lib-src/portaudio-v19/src/hostapi/wasapi/pa_win_wasapi.c
index 1d8f20070..93e1d612a 100644
--- a/lib-src/portaudio-v19/src/hostapi/wasapi/pa_win_wasapi.c
+++ b/lib-src/portaudio-v19/src/hostapi/wasapi/pa_win_wasapi.c
@@ -5283,6 +5283,32 @@ PaError PaWasapi_SetStreamStateHandler( PaStream *pStream, PaWasapiStreamStateCa
 	return paNoError;
 }
 
+// ------------------------------------------------------------------------------------------
+const wchar_t *PaWasapi_GetInputDeviceID( PaStream *s )
+{
+    PaWasapiStream *stream = (PaWasapiStream *)s;
+    if (stream == NULL)
+        return NULL;
+	
+    if (stream->in.params.device_info)
+        return stream->in.params.device_info->szDeviceID;
+
+    return NULL;
+}
+
+// ------------------------------------------------------------------------------------------
+const wchar_t *PaWasapi_GetOutputDeviceID( PaStream *s )
+{
+    PaWasapiStream *stream = (PaWasapiStream *)s;
+    if (stream == NULL)
+        return NULL;
+
+    if (stream->out.params.device_info)
+        return stream->out.params.device_info->szDeviceID;
+
+    return NULL;
+}
+
 // ------------------------------------------------------------------------------------------
 HRESULT _PollGetOutputFramesAvailable(PaWasapiStream *stream, UINT32 *available)
 {
diff --git a/lib-src/portaudio-v19/include/pa_unix_oss.h b/lib-src/portaudio-v19/include/pa_unix_oss.h
new file mode 100644
index 000000000..97db109ae
--- /dev/null
+++ b/lib-src/portaudio-v19/include/pa_unix_oss.h
@@ -0,0 +1,52 @@
+#ifndef PA_UNIX_OSS_H
+#define PA_UNIX_OSS_H
+
+/*
+ * $Id: pa_unix_oss.h,v 1.6 2008-12-31 15:38:31 richardash1981 Exp $
+ * PortAudio Portable Real-Time Audio Library
+ * OSS-specific extensions
+ *
+ * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/** @file
+ * OSS-specific PortAudio API extension header file.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const char *PaOSS_GetStreamInputDevice( PaStream *s );
+
+const char *PaOSS_GetStreamOutputDevice( PaStream *s );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif