New: Do not import files inside the EXTRAS folder within a Series

src/NzbDrone.Core/MediaFiles/DiskScanService.cs

@@ -1,4 +1,6 @@
-using System.Diagnostics;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using NLog;
@@ -76,7 +78,7 @@ namespace NzbDrone.Core.MediaFiles
             }
 
             var videoFilesStopwatch = Stopwatch.StartNew();
-            var mediaFileList = GetVideoFiles(series.Path).ToList();
+            var mediaFileList = GetVideoFiles(series.Path).Where(file => !file.StartsWith(Path.Combine(series.Path, "EXTRAS"))).ToList();
             videoFilesStopwatch.Stop();
             _logger.Trace("Finished getting episode files for: {0} [{1}]", series, videoFilesStopwatch.Elapsed);
 

src/NzbDrone.Core/Metadata/ExistingMetadataService.cs

@@ -40,7 +40,10 @@ namespace NzbDrone.Core.Metadata
             _logger.Debug("Looking for existing metadata in {0}", message.Series.Path);
 
             var filesOnDisk = _diskProvider.GetFiles(message.Series.Path, SearchOption.AllDirectories);
-            var possibleMetadataFiles = filesOnDisk.Where(c => !MediaFileExtensions.Extensions.Contains(Path.GetExtension(c).ToLower())).ToList();
+
+            var possibleMetadataFiles = filesOnDisk.Where(c => !MediaFileExtensions.Extensions.Contains(Path.GetExtension(c).ToLower()) &&
+                                                         !c.StartsWith(Path.Combine(message.Series.Path, "EXTRAS"))).ToList();
+
             var filteredFiles = _metadataFileService.FilterExistingFiles(possibleMetadataFiles, message.Series);
 
             var metadataFiles = new List<MetadataFile>();