diff --git a/src/NTwain/Triplets/Audio/AudioFileXfer.cs b/src/NTwain/Triplets/Audio/AudioFileXfer.cs
new file mode 100644
index 0000000..4893568
--- /dev/null
+++ b/src/NTwain/Triplets/Audio/AudioFileXfer.cs
@@ -0,0 +1,40 @@
+using NTwain.Data;
+using NTwain.Internals;
+using System;
+
+namespace NTwain.Triplets.Audio
+{
+	sealed class AudioFileXfer : BaseTriplet
+    {
+        internal AudioFileXfer(TwainSession session) : base(session) { }
+
+		public ReturnCode Get()
+		{
+			IntPtr zero = IntPtr.Zero;
+            if (Is32Bit)
+            {
+                if (IsWin)
+                    return NativeMethods.DsmWin32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+                if (IsLinux)
+                    return NativeMethods.DsmLinux32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+                if (IsMac)
+                    return NativeMethods.DsmMac32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+            }
+
+            if (IsWin)
+                return NativeMethods.DsmWin64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+            if (IsLinux)
+                return NativeMethods.DsmLinux64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+            if (IsMac)
+                return NativeMethods.DsmMac64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioFileXfer, Message.Get, ref zero);
+
+            return ReturnCode.Failure;
+        }
+	}
+}
\ No newline at end of file
diff --git a/src/NTwain/Triplets/Audio/AudioNativeXfer.cs b/src/NTwain/Triplets/Audio/AudioNativeXfer.cs
new file mode 100644
index 0000000..1c5e2ea
--- /dev/null
+++ b/src/NTwain/Triplets/Audio/AudioNativeXfer.cs
@@ -0,0 +1,39 @@
+using NTwain.Data;
+using NTwain.Internals;
+using System;
+
+namespace NTwain.Triplets.Audio
+{
+	sealed class AudioNativeXfer : BaseTriplet
+    {
+		internal AudioNativeXfer(TwainSession session) : base(session) { }
+
+		public ReturnCode Get(ref IntPtr handle)
+        {
+            if (Is32Bit)
+            {
+                if (IsWin)
+                    return NativeMethods.DsmWin32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+                if (IsLinux)
+                    return NativeMethods.DsmLinux32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+                if (IsMac)
+                    return NativeMethods.DsmMac32(Session.Config.App32, Session.CurrentSource.Identity32,
+                        DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+            }
+
+            if (IsWin)
+                return NativeMethods.DsmWin64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+            if (IsLinux)
+                return NativeMethods.DsmLinux64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+            if (IsMac)
+                return NativeMethods.DsmMac64(Session.Config.App32, Session.CurrentSource.Identity32,
+                    DataGroups.Audio, DataArgumentType.AudioNativeXfer, Message.Get, ref handle);
+
+            return ReturnCode.Failure;
+        }
+	}
+}
\ No newline at end of file
diff --git a/src/NTwain/Triplets/DGAudio.cs b/src/NTwain/Triplets/DGAudio.cs
index 9266c3f..b5be214 100644
--- a/src/NTwain/Triplets/DGAudio.cs
+++ b/src/NTwain/Triplets/DGAudio.cs
@@ -10,11 +10,17 @@ namespace NTwain.Triplets
     /// <summary>
     /// Represents <see cref="DataGroups.Audio"/>.
 	/// </summary>
-    public partial class DGAudio : BaseTriplet
+    partial class DGAudio : BaseTriplet
     {
         internal DGAudio(TwainSession session) : base(session) { }
-        
+
+        AudioFileXfer _fileXfer;
+        internal AudioFileXfer AudioFileXfer => _fileXfer ?? (_fileXfer = new AudioFileXfer(Session));
+
         AudioInfo _info;
         internal AudioInfo AudioInfo => _info ?? (_info = new AudioInfo(Session));
+
+        AudioNativeXfer _natXfer;
+        internal AudioNativeXfer AudioNativeXfer => _natXfer ?? (_natXfer = new AudioNativeXfer(Session));
     }
 }
diff --git a/src/NTwain/TwainSession.MsgHandling.cs b/src/NTwain/TwainSession.MsgHandling.cs
index 80a8dbc..eb4610b 100644
--- a/src/NTwain/TwainSession.MsgHandling.cs
+++ b/src/NTwain/TwainSession.MsgHandling.cs
@@ -247,6 +247,7 @@ namespace NTwain
                 // some DS returns none but we will assume it's image
                 xferImage = xferGroup == DataGroups.None || (xferGroup & DataGroups.Image) == DataGroups.Image;
             }
+            // TODO: restore this
             if (xferImage)
             {
                 //imgXferMech = CurrentSource.Capabilities.ICapXferMech.GetCurrent();
diff --git a/src/NTwain/TwainSession.Props.cs b/src/NTwain/TwainSession.Props.cs
index d2797aa..9b5d95d 100644
--- a/src/NTwain/TwainSession.Props.cs
+++ b/src/NTwain/TwainSession.Props.cs
@@ -40,7 +40,7 @@ namespace NTwain
         /// <summary>
         /// Gets the triplet operations defined for audio data group.
         /// </summary>
-        public DGAudio DGAudio => dgAudio ?? (dgAudio = new DGAudio(this));
+        DGAudio DGAudio => dgAudio ?? (dgAudio = new DGAudio(this));
 
         ///// <summary>
         ///// Gets/sets the direct triplet operation entry for custom values.