diff --git a/.gitignore b/.gitignore
index 09f749e1..43718433 100644
--- a/.gitignore
+++ b/.gitignore
@@ -333,3 +333,4 @@ ASALocalRun/
 # manually ignored files
 /__TODO.txt
 /DataLayer/LibationContext.db
+/AaxDecrypter/DecryptLib/avformat-58.dll.bak
diff --git a/AaxDecrypter/AaxDecrypter.csproj b/AaxDecrypter/AaxDecrypter.csproj
index daab451a..56b60933 100644
--- a/AaxDecrypter/AaxDecrypter.csproj
+++ b/AaxDecrypter/AaxDecrypter.csproj
@@ -4,6 +4,10 @@
     <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Remove="DecryptLib\avformat-58.dll.bak" />
+  </ItemGroup>
+
   <ItemGroup>
     <Reference Include="taglib-sharp">
       <HintPath>lib\taglib-sharp.dll</HintPath>
diff --git a/AaxDecrypter/AaxToM4bConverter.cs b/AaxDecrypter/AaxToM4bConverter.cs
index 4fbfc4de..b9237759 100644
--- a/AaxDecrypter/AaxToM4bConverter.cs
+++ b/AaxDecrypter/AaxToM4bConverter.cs
@@ -173,7 +173,7 @@ namespace AaxDecrypter
         {
             DecryptProgressUpdate?.Invoke(this, 0);
 
-            var tempRipFile = Path.Combine(outDir, "funny.mp4");
+            var tempRipFile = Path.Combine(outDir, "funny.aac");
 
             var fail = "WARNING-Decrypt failure. ";
 
@@ -235,7 +235,7 @@ namespace AaxDecrypter
                 + audible_iv
                 + " -i "
                 + "\"" + inputFileName + "\""
-                + " -c:a copy -vn -sn -dn -y "
+                + " -c:a copy -vn -sn -dn -y -f adts "
                 + "\"" + tempFileName + "\"";
 
             var info = new ProcessStartInfo
diff --git a/AaxDecrypter/DecryptLib/avformat-58.dll b/AaxDecrypter/DecryptLib/avformat-58.dll
index 18ccd0e7..37161814 100644
Binary files a/AaxDecrypter/DecryptLib/avformat-58.dll and b/AaxDecrypter/DecryptLib/avformat-58.dll differ
diff --git a/LibationLauncher/LibationLauncher.csproj b/LibationLauncher/LibationLauncher.csproj
index baa93b8a..bc9b948c 100644
--- a/LibationLauncher/LibationLauncher.csproj
+++ b/LibationLauncher/LibationLauncher.csproj
@@ -13,7 +13,7 @@
     <!-- <PublishSingleFile>true</PublishSingleFile> -->
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>
 
-    <Version>4.4.0.34</Version>
+    <Version>4.4.0.42</Version>
   </PropertyGroup>
 
   <ItemGroup>