diff --git a/Audiotool/Converters/WavConverter.cs b/Audiotool/Converters/WavConverter.cs
index 2549ea5..3374680 100644
--- a/Audiotool/Converters/WavConverter.cs
+++ b/Audiotool/Converters/WavConverter.cs
@@ -1,4 +1,4 @@
-using System.Collections.ObjectModel;
+using System.Collections.ObjectModel;
 using System.IO;
 using Audiotool.model;
 using FFMpegCore;
@@ -8,12 +8,13 @@ namespace Audiotool.Converters;
 public static class WavConverter
 {
     public static void ConvertToWav(List<Audio> audioFiles, string outputFolder)
-    {   
+    {
         foreach (Audio audio in audioFiles)
         {
+            string outputPath = Path.Combine(outputFolder, $"{audio.FileName}.wav");
+
             if (audio.FileExtension != "wav")
             {
-                string outputPath = Path.Combine(outputFolder, $"{audio.FileName}.wav");
                 FFMpegArguments ff = FFMpegArguments
                     .FromFileInput(audio.FilePath);
                 _ = ff.OutputToFile(outputPath, true, opt =>
@@ -27,9 +28,13 @@ public static void ConvertToWav(List<Audio> audioFiles, string outputFolder)
                     if (audio.Channels != 1)
                         opt.WithCustomArgument("-ac 1");
                 }).ProcessSynchronously();
-
-                audio.FileSize = (ulong)new FileInfo(outputPath).Length; //; (long)(info.PrimaryAudioStream.BitRate * info.Duration.TotalSeconds * info.PrimaryAudioStream.Channels);
             }
+            else
+            {
+                File.Copy(audio.FilePath, outputPath, true);
+            }
+
+            audio.FileSize = (ulong)new FileInfo(outputPath).Length;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Audiotool/model/Audio.cs b/Audiotool/model/Audio.cs
index d2d7392..fee97dd 100644
--- a/Audiotool/model/Audio.cs
+++ b/Audiotool/model/Audio.cs
@@ -1,4 +1,4 @@
-using System.Xml;
+using System.Xml;
 
 namespace Audiotool.model;
 
@@ -42,7 +42,7 @@ public class Audio
     
     public List<XmlNode> GenerateXML(XmlDocument doc)
     {
-        if (FileSize >= 1.5 * 1024 * 1024)
+        if (FileSize > (1.5 * 8 * 1024 * 1024))
         {
             streamFormat = true;
         }
@@ -238,4 +238,4 @@ private void AppendAttributeElement(XmlDocument doc, XmlElement parent,
         element.SetAttribute(attributeName, attributeValue);
         parent.AppendChild(element);
     }
-}
\ No newline at end of file
+}
diff --git a/Audiotool/repository/NativeAudioRepo.cs b/Audiotool/repository/NativeAudioRepo.cs
index 996988e..4bbd930 100644
--- a/Audiotool/repository/NativeAudioRepo.cs
+++ b/Audiotool/repository/NativeAudioRepo.cs
@@ -1,4 +1,4 @@
-using Audiotool.model;
+using Audiotool.model;
 using FFMpegCore;
 using System.Collections.ObjectModel;
 using System.IO;
@@ -38,11 +38,11 @@ public async Task AddAudioFile(string path)
             SampleRate = info.PrimaryAudioStream.SampleRateHz,
             Duration = info.Duration,
             Channels = info.PrimaryAudioStream.Channels,
-            FileSize = (ulong)(info.PrimaryAudioStream.BitRate * info.Duration.TotalSeconds * info.PrimaryAudioStream.Channels)
+            FileSize = (ulong)new FileInfo(path).Length
         };
 
 
-       AudioFiles.Add(audioFile);
+        AudioFiles.Add(audioFile);
     }
 
     public ObservableCollection<Audio> GetAudioFiles() => new(AudioFiles);