diff --git a/BasicNodes/File/FileExists.cs b/BasicNodes/File/FileExists.cs
index 5dad6569..4ba8a2a5 100644
--- a/BasicNodes/File/FileExists.cs
+++ b/BasicNodes/File/FileExists.cs
@@ -1,47 +1,45 @@
-namespace FileFlows.BasicNodes.File
+namespace FileFlows.BasicNodes.File;
+using FileFlows.Plugin;
+using FileFlows.Plugin.Attributes;
+
+public class FileExists: Node
 {
-    using FileFlows.Plugin;
-    using FileFlows.Plugin.Attributes;
+    public override int Inputs => 1;
+    public override int Outputs => 2;
 
-    public class FileExists: Node
+    public override FlowElementType Type => FlowElementType.Logic;
+    public override string Icon => "fas fa-question-circle";
+
+    public override string HelpUrl => "https://fileflows.com/docs/plugins/basic-nodes/file-exists";
+
+
+    [TextVariable(1)]
+    public string FileName { get; set; }
+
+    public override int Execute(NodeParameters args)
     {
-        public override int Inputs => 1;
-        public override int Outputs => 2;
-
-        public override FlowElementType Type => FlowElementType.Logic;
-        public override string Icon => "fas fa-question-circle";
-
-        public override string HelpUrl => "https://fileflows.com/docs/plugins/basic-nodes/file-exists";
-
-
-        [TextVariable(1)]
-        public string FileName { get; set; }
-
-        public override int Execute(NodeParameters args)
+        string file = args.ReplaceVariables(FileName ?? string.Empty, true);
+        if(string.IsNullOrWhiteSpace(file))
         {
-            string file = args.ReplaceVariables(FileName ?? string.Empty, true);
-            if(string.IsNullOrWhiteSpace(file))
+            args.Logger?.ELog("FileName not set");
+            return -1;
+        }
+        try
+        {
+            file = args.MapPath(file);
+            var fileInfo = new FileInfo(file);
+            if (fileInfo.Exists)
             {
-                args.Logger?.ELog("FileName not set");
-                return -1;
-            }
-            try
-            {
-                file = args.MapPath(file);
-                var fileInfo = new FileInfo(file);
-                if (fileInfo.Exists)
-                {
-                    args.Logger?.ILog("File does exist: " + file);
-                    return 1;
-                }
-                args.Logger?.ILog("File does NOT exist: " + file);
-                return 2;
-            }
-            catch (Exception ex)
-            {
-                args.Logger?.ELog($"Failed testing if file '{file}' exists: " + ex.Message);
-                return -1;
+                args.Logger?.ILog("File does exist: " + file);
+                return 1;
             }
+            args.Logger?.ILog("File does NOT exist: " + file);
+            return 2;
+        }
+        catch (Exception ex)
+        {
+            args.Logger?.ELog($"Failed testing if file '{file}' exists: " + ex.Message);
+            return -1;
         }
     }
 }
\ No newline at end of file
diff --git a/BasicNodes/Tests/FileExistsTests.cs b/BasicNodes/Tests/FileExistsTests.cs
new file mode 100644
index 00000000..6e75cce9
--- /dev/null
+++ b/BasicNodes/Tests/FileExistsTests.cs
@@ -0,0 +1,23 @@
+#if(DEBUG)
+
+using FileFlows.BasicNodes.File;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace BasicNodes.Tests;
+
+[TestClass]
+public class FileExistsTests
+{
+    [TestMethod]
+    public void BasicTest()
+    {            
+        var logger = new TestLogger();
+        var args = new FileFlows.Plugin.NodeParameters(@"c:\test\testfile.mkv", logger, false, string.Empty);
+
+        var element = new FileExists();
+        element.FileName = "{folder.Orig.FullName}/{file.Orig.FileNameNoExtension}.en.srt";
+        element.Execute(args);
+    }
+}
+
+#endif
\ No newline at end of file
diff --git a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
index a43647c3..fa533299 100644
--- a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
+++ b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioAddTrack.cs
@@ -108,21 +108,56 @@ public class FfmpegBuilderAudioAddTrack : FfmpegBuilderNode
             return _BitrateOptions;
         }
     }
+    
+    
+    /// <summary>
+    /// Gets or sets the sample rate
+    /// </summary>
+    [DefaultValue(0)]
+    [Select(nameof(SampleRateOptions), 4)]
+    public int SampleRate { get; set; }
+
+    private static List<ListOption> _SampleRateOptions;
+    /// <summary>
+    /// Gets the sample rate options
+    /// </summary>
+    public static List<ListOption> SampleRateOptions
+    {
+        get
+        {
+            if (_SampleRateOptions == null)
+            {
+                _SampleRateOptions = new List<ListOption>
+                {
+                    new () { Label = "Automatic", Value = 0},
+                    new () { Label = "Same as source", Value = 1},
+                    new () { Label = "44.1Khz", Value = 44100 },
+                    new () { Label = "48Khz", Value = 48000 },
+                    new () { Label = "88.2Khz", Value = 88200 },
+                    new () { Label = "96Khz", Value = 96000 },
+                    new () { Label = "176.4Khz", Value = 176400 },
+                    new () { Label = "192Khz", Value = 192000 }
+                };
+            }
+            return _SampleRateOptions;
+        }
+    }
+    
     /// <summary>
     /// Gets or sets the language of the nee track
     /// </summary>
     [DefaultValue("eng")]
-    [TextVariable(4)]
+    [TextVariable(5)]
     public string Language { get; set; }
     /// <summary>
     /// Gets or sets if the title of the new track should be removed
     /// </summary>
-    [Boolean(5)]
+    [Boolean(6)]
     public bool RemoveTitle { get; set; }
     /// <summary>
     /// Gets or sets the title of the new track
     /// </summary>
-    [TextVariable(6)]
+    [TextVariable(7)]
     [ConditionEquals(nameof(RemoveTitle), false)]
     public string NewTitle { get; set; }
     
@@ -165,7 +200,8 @@ public class FfmpegBuilderAudioAddTrack : FfmpegBuilderNode
         }
         else
         {
-            audio.EncodingParameters.AddRange(GetNewAudioTrackParameters(Codec, Channels, Bitrate));
+            int sampleRate = SampleRate == 1 ? audio.Stream.SampleRate : SampleRate;
+            audio.EncodingParameters.AddRange(GetNewAudioTrackParameters(Codec, Channels, Bitrate, sampleRate));
             if (this.Channels > 0)
                 audio.Channels = this.Channels;
         }
@@ -252,52 +288,42 @@ public class FfmpegBuilderAudioAddTrack : FfmpegBuilderNode
     /// <param name="codec">the codec of the new track</param>
     /// <param name="channels">the channels of the new track</param>
     /// <param name="bitrate">the bitrate of the new track</param>
+    /// <param name="sampleRate">the sample rate</param>
     /// <returns>the new track parameters</returns>
-    internal static string[] GetNewAudioTrackParameters(string codec, float channels, int bitrate)
+    internal static string[] GetNewAudioTrackParameters(string codec, float channels, int bitrate, int sampleRate)
     {
         if (codec == "opus")
             codec = "libopus";
+        
+        // Prepare the options list
+        var options = new List<string>
+        {
+            "-map", "0:a:{sourceTypeIndex}",
+            "-c:a:{index}",
+            codec
+        };
 
-        if (channels == 0)
+        // Handle channels
+        if (channels > 0)
         {
-            // same as source
-            if (bitrate == 0)
-            {
-                return new[]
-                {
-                    "-map", "0:a:{sourceTypeIndex}", 
-                    "-c:a:{index}",
-                    codec
-                };
-            }
-            return new[]
-            {
-                "-map", "0:a:{sourceTypeIndex}",
-                "-c:a:{index}",
-                codec,
-                "-b:a:{index}", bitrate + "k"
-            };
+            options.Add("-ac:a:{index}");
+            options.Add(channels.ToString());
         }
-        else
+
+        // Handle bitrate
+        if (bitrate > 0)
         {
-            if (bitrate == 0)
-            {
-                return new[]
-                {
-                    "-map", "0:a:{sourceTypeIndex}",
-                    "-c:a:{index}",
-                    codec,
-                    "-ac:a:{index}", channels.ToString()
-                };
-            }
-            return new[]
-            {
-                "-map", "0:a:{sourceTypeIndex}",
-                "-c:a:{index}",
-                codec,
-                "-ac:a:{index}", channels.ToString(),
-                "-b:a:{index}", bitrate + "k"
-            };
+            options.Add("-b:a:{index}");
+            options.Add(bitrate + "k");
         }
+
+        // Handle sample rate
+        if (sampleRate > 0)
+        {
+            options.Add("-ar:a:{index}");
+            options.Add(sampleRate.ToString());
+        }
+
+        return options.ToArray();
     }
 }
diff --git a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioConvert.cs b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioConvert.cs
index 3732cdb8..fbcad09f 100644
--- a/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioConvert.cs
+++ b/VideoNodes/FfmpegBuilderNodes/Audio/FfmpegBuilderAudioConvert.cs
@@ -136,7 +136,7 @@ public class FfmpegBuilderAudioConverter : FfmpegBuilderNode
         if (codecSame && channelsSame && bitrateSame)
             return false;
 
-        stream.EncodingParameters.AddRange(FfmpegBuilderAudioAddTrack.GetNewAudioTrackParameters(Codec, Channels, Bitrate));
+        stream.EncodingParameters.AddRange(FfmpegBuilderAudioAddTrack.GetNewAudioTrackParameters(Codec, Channels, Bitrate, 0));
         return true;
     }
 }
diff --git a/VideoNodes/VideoNodes.en.json b/VideoNodes/VideoNodes.en.json
index c8802a1a..32c9a05a 100644
--- a/VideoNodes/VideoNodes.en.json
+++ b/VideoNodes/VideoNodes.en.json
@@ -95,6 +95,8 @@
           "Bitrate-Help": "Bitrate of the new audio track",
           "Codec": "Codec",
           "Codec-Help": "The codec to use to encode the audio",
+          "SampleRate": "Sample Rate",
+          "SampleRate-Help": "The sample rate to use for the new audio track",
           "Language": "Language",
           "Language-Help": "Optional [ISO 639-2](https://en.wikipedia.org/wiki/List_of_ISO_639-2_codes) language code to use.  Will attempt to find an audio track with this language code if not the best audio track will be used.",
           "NewTitle": "New Title",