diff --git a/AudioCuesheetEditor/Model/IO/Audio/Audiofile.cs b/AudioCuesheetEditor/Model/IO/Audio/Audiofile.cs
index f42de7dc..a390feda 100644
--- a/AudioCuesheetEditor/Model/IO/Audio/Audiofile.cs
+++ b/AudioCuesheetEditor/Model/IO/Audio/Audiofile.cs
@@ -46,7 +46,7 @@ public Audiofile(String name, Boolean isRecorded = false)
             IsRecorded = isRecorded;
         }
 
-        public Audiofile(String name, String objectURL, AudioCodec audioCodec, HttpClient httpClient, Boolean isRecorded = false) : this(name, isRecorded)
+        public Audiofile(String name, String objectURL, AudioCodec? audioCodec, HttpClient httpClient, Boolean isRecorded = false) : this(name, isRecorded)
         {
             if (String.IsNullOrEmpty(objectURL))
             {
diff --git a/AudioCuesheetEditor/Model/Utility/IOUtility.cs b/AudioCuesheetEditor/Model/Utility/IOUtility.cs
index 51105b97..450d14de 100644
--- a/AudioCuesheetEditor/Model/Utility/IOUtility.cs
+++ b/AudioCuesheetEditor/Model/Utility/IOUtility.cs
@@ -39,16 +39,28 @@ public static Boolean CheckFileMimeType(IFileEntry file, String mimeType, String
             return fileMimeTypeMatches;
         }
 
-        public static Boolean CheckFileMimeType(IFileEntry file, IReadOnlyCollection<AudioCodec> audioCodecs)
+        public static Boolean CheckFileMimeTypeForAudioCodec(IFileEntry file)
         {
-            Boolean fileMimeTypeMatches = false;
-            if ((file != null) && (audioCodecs != null))
+            return GetAudioCodec(file) != null;
+        }
+
+        public static AudioCodec? GetAudioCodec(IFileEntry fileEntry)
+        {
+            AudioCodec? foundAudioCodec = null;
+            var extension = Path.GetExtension(fileEntry.Name).ToLower();
+            // First search with mime type and file extension
+            var audioCodecsFound = Audiofile.AudioCodecs.Where(x => x.MimeType.Equals(fileEntry.Type, StringComparison.OrdinalIgnoreCase) && x.FileExtension.Equals(extension, StringComparison.OrdinalIgnoreCase));
+            if (audioCodecsFound.Count() <= 1)
             {
-                var extension = Path.GetExtension(file.Name).ToLower();
-                var audioCodecsFound = audioCodecs.Where(x => x.MimeType.Equals(file.Type, StringComparison.OrdinalIgnoreCase) || x.FileExtension.Equals(extension, StringComparison.OrdinalIgnoreCase));
-                fileMimeTypeMatches = (audioCodecsFound != null) && (audioCodecsFound.Any());
+                foundAudioCodec = audioCodecsFound.FirstOrDefault();
             }
-            return fileMimeTypeMatches;
+            else
+            {
+                // Second search with mime type or file extension
+                audioCodecsFound = Audiofile.AudioCodecs.Where(x => x.MimeType.Equals(fileEntry.Type, StringComparison.OrdinalIgnoreCase) || x.FileExtension.Equals(extension, StringComparison.OrdinalIgnoreCase));
+                foundAudioCodec = audioCodecsFound.FirstOrDefault();
+            }
+            return foundAudioCodec;
         }
     }
 }
diff --git a/AudioCuesheetEditor/Pages/ViewModeImport.razor b/AudioCuesheetEditor/Pages/ViewModeImport.razor
index 74352bd2..7ed3ac7d 100644
--- a/AudioCuesheetEditor/Pages/ViewModeImport.razor
+++ b/AudioCuesheetEditor/Pages/ViewModeImport.razor
@@ -471,7 +471,7 @@ along with Foobar.  If not, see
             if ((IOUtility.CheckFileMimeType(file, Projectfile.MimeType, Projectfile.FileExtension) == false)
                 && (IOUtility.CheckFileMimeType(file, Cuesheet.MimeType, Cuesheet.FileExtension) == false)
                 && (IOUtility.CheckFileMimeType(file, TextImportfile.MimeType, TextImportfile.FileExtension) == false)
-                && (IOUtility.CheckFileMimeType(file, Audiofile.AudioCodecs) == false))
+                && (IOUtility.CheckFileMimeTypeForAudioCodec(file) == false))
             {
                 invalidDropFileNames.Add(file.Name);
             }
@@ -528,10 +528,10 @@ along with Foobar.  If not, see
                 _sessionStateContainer.TextImportFile.TimeSpanFormat.ValidateablePropertyChanged += Timespanformat_ValidateablePropertyChanged;
                 _sessionStateContainer.TextImportFile.TextImportScheme.ValidateablePropertyChanged += TextImportScheme_ValidateablePropertyChanged;
             }
-            if (IOUtility.CheckFileMimeType(file, Audiofile.AudioCodecs) == true)
+            if (IOUtility.CheckFileMimeTypeForAudioCodec(file) == true)
             {
                 var audioFileObjectURL = await _jsRuntime.InvokeAsync<String>("getObjectURL", "dropFileInput");
-                var codec = Audiofile.AudioCodecs.Single(x => x.MimeType.Equals(file.Type, StringComparison.OrdinalIgnoreCase));
+                var codec = IOUtility.GetAudioCodec(file);
                 var audiofile = new Audiofile(file.Name, audioFileObjectURL, codec, _httpClient);
                 _ = audiofile.LoadContentStream();
                 _sessionStateContainer.ImportAudiofile = audiofile;
diff --git a/AudioCuesheetEditor/Shared/CuesheetData.razor b/AudioCuesheetEditor/Shared/CuesheetData.razor
index 8923b230..c6533636 100644
--- a/AudioCuesheetEditor/Shared/CuesheetData.razor
+++ b/AudioCuesheetEditor/Shared/CuesheetData.razor
@@ -227,7 +227,7 @@ along with Foobar.  If not, see
             if (Cuesheet != null)
             {
                 var file = e.Files.First();
-                if (IOUtility.CheckFileMimeType(file, Audiofile.AudioCodecs) == true)
+                if (IOUtility.CheckFileMimeTypeForAudioCodec(file) == true)
                 {
                     await SetAudioFile(file);
                 }
@@ -262,7 +262,7 @@ along with Foobar.  If not, see
             if (file != null)
             {
                 var audioFileObjectURL = await _jsRuntime.InvokeAsync<String>("getObjectURL", fileEditAudiofileId);
-                var codec = Audiofile.AudioCodecs.Single(x => x.MimeType.Equals(file.Type, StringComparison.OrdinalIgnoreCase));
+                var codec = IOUtility.GetAudioCodec(file);
                 var audiofile = new Audiofile(file.Name, audioFileObjectURL, codec, _httpClient);
                 _ = audiofile.LoadContentStream();
                 Cuesheet.Audiofile = audiofile;