diff --git a/lib/tlCore/Audio.h b/lib/tlCore/Audio.h
index b27a2275..399adb93 100644
--- a/lib/tlCore/Audio.h
+++ b/lib/tlCore/Audio.h
@@ -110,6 +110,7 @@ namespace tl
             size_t      channelCount = 0;
             DataType    dataType     = DataType::None;
             size_t      sampleRate   = 0;
+            unsigned    audioTracks  = 1;
 
             //! Is the audio valid?
             bool isValid() const;
diff --git a/lib/tlIO/FFmpegReadAudio.cpp b/lib/tlIO/FFmpegReadAudio.cpp
index be6e83c7..ca42949b 100644
--- a/lib/tlIO/FFmpegReadAudio.cpp
+++ b/lib/tlIO/FFmpegReadAudio.cpp
@@ -59,13 +59,16 @@ namespace tl
             {
                 throw std::runtime_error(string::Format("{0}: {1}").arg(fileName).arg(getErrorLabel(r)));
             }
+            unsigned int audioTracks = 0;
             for (unsigned int i = 0; i < _avFormatContext->nb_streams; ++i)
             {
-                if (AVMEDIA_TYPE_AUDIO == _avFormatContext->streams[i]->codecpar->codec_type &&
-                    AV_DISPOSITION_DEFAULT == _avFormatContext->streams[i]->disposition)
+                if (AVMEDIA_TYPE_AUDIO == _avFormatContext->streams[i]->codecpar->codec_type)
                 {
-                    _avStream = i;
-                    break;
+                    ++audioTracks;
+                    if (AV_DISPOSITION_DEFAULT == _avFormatContext->streams[i]->disposition)
+                    {
+                        _avStream = i;
+                    }
                 }
             }
             if (-1 == _avStream)
@@ -84,6 +87,8 @@ namespace tl
             {
                 //av_dump_format(_avFormatContext, _avStream, fileName.c_str(), 0);
 
+                _info.audioTracks = audioTracks;
+                
                 auto avAudioStream = _avFormatContext->streams[_avStream];
                 auto avAudioCodecParameters = avAudioStream->codecpar;
                 auto avAudioCodec = avcodec_find_decoder(avAudioCodecParameters->codec_id);