--- OniSplit/Sound/AifExporter.cs	2020/01/22 14:08:57	1114
+++ OniSplit/Sound/AifExporter.cs	2020/05/30 12:08:12	1131
@@ -6,6 +6,8 @@ namespace Oni.Sound
     internal class AifExporter : SoundExporter
     {
         #region Private data
+        private bool do_pc_demo_test;
+
         private const int fcc_FORM = 0x464f524d;
         private const int fcc_AIFC = 0x41494643;
         private const int fcc_COMM = 0x434f4d4d;
@@ -19,18 +21,23 @@ namespace Oni.Sound
 
         #endregion
 
-        public AifExporter(InstanceFileManager fileManager, string outputDirPath)
+        public AifExporter(InstanceFileManager fileManager, string outputDirPath, bool noDemo = false)
             : base(fileManager, outputDirPath)
         {
+            do_pc_demo_test = !noDemo;
         }
 
         protected override void ExportInstance(InstanceDescriptor descriptor)
         {
-            var sound = SoundData.Read(descriptor);
+            var sound = SoundData.Read(descriptor, do_pc_demo_test);
 
             using (var stream = File.Create(Path.Combine(OutputDirPath, descriptor.FullName + ".aif")))
             using (var writer = new BinaryWriter(stream))
             {
+                if (!(sound.IsIMA4))
+                {
+                    throw new NotSupportedException("Transcoding from MS ADPCM (PC) to IMA4 ADPCM (Mac) not supported!");
+                }
                 writer.Write(Utils.ByteSwap(fcc_FORM));
                 writer.Write(Utils.ByteSwap(50 + sound.Data.Length));
                 writer.Write(Utils.ByteSwap(fcc_AIFC));