Only detect the .cue file encoding for the manual import service.

(cherry picked from commit a3ccf87b01f071e2bf9db89e4248c730226d059c)
(cherry picked from commit e1ab63906ac4761e0ae2ebfe040854f335f46476)

src/NzbDrone.Core/MediaFiles/CueSheetService.cs

@@ -107,7 +107,7 @@ namespace NzbDrone.Core.MediaFiles
             var cueSheetInfos = new List<CueSheetInfo>();
             foreach (var cueFile in cueFiles)
             {
-                var cueSheetInfo = GetCueSheetInfo(cueFile, mediaFileList);
+                var cueSheetInfo = GetCueSheetInfo(cueFile, mediaFileList, itemInfo.DetectCueFileEncoding);
                 if (idOverrides != null)
                 {
                     cueSheetInfo.IdOverrides = idOverrides;
@@ -246,19 +246,26 @@ namespace NzbDrone.Core.MediaFiles
             return title;
         }
 
-        private CueSheet LoadCueSheet(IFileInfo fileInfo)
+        private CueSheet LoadCueSheet(IFileInfo fileInfo, bool detectCueFileEncoding)
         {
             using (var fs = fileInfo.OpenRead())
             {
                 var bytes = new byte[fileInfo.Length];
-                var result = CharsetDetector.DetectFromFile(fileInfo.FullName); // or pass FileInfo
-                var encoding = result.Detected.Encoding;
-                _logger.Debug("Detected encoding {0} for {1}", encoding.WebName, fileInfo.FullName);
-
-                string content;
                 while (fs.Read(bytes, 0, bytes.Length) > 0)
                 {
-                    content = encoding.GetString(bytes);
+                    string content;
+                    if (detectCueFileEncoding)
+                    {
+                        var result = CharsetDetector.DetectFromFile(fileInfo.FullName); // or pass FileInfo
+                        var encoding = result.Detected.Encoding;
+                        _logger.Debug("Detected encoding {0} for {1}", encoding.WebName, fileInfo.FullName);
+                        content = encoding.GetString(bytes);
+                    }
+                    else
+                    {
+                        content = Encoding.UTF8.GetString(bytes);
+                    }
+
                     var lines = content.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
                     var cueSheet = ParseLines(lines);
 
@@ -425,10 +432,10 @@ namespace NzbDrone.Core.MediaFiles
             return null;
         }
 
-        private CueSheetInfo GetCueSheetInfo(IFileInfo cueFile, List<IFileInfo> musicFiles)
+        private CueSheetInfo GetCueSheetInfo(IFileInfo cueFile, List<IFileInfo> musicFiles, bool detectCueFileEncoding)
         {
             var cueSheetInfo = new CueSheetInfo();
-            var cueSheet = LoadCueSheet(cueFile);
+            var cueSheet = LoadCueSheet(cueFile, detectCueFileEncoding);
             if (cueSheet == null)
             {
                 return cueSheetInfo;

src/NzbDrone.Core/MediaFiles/DiskScanService.cs

@@ -102,6 +102,7 @@ namespace NzbDrone.Core.MediaFiles
 
             var decisions = new List<ImportDecision<LocalTrack>>();
 
+            itemInfo.DetectCueFileEncoding = false;
             decisions.AddRange(_cueSheetService.GetImportDecisions(ref mediaFileList, null, itemInfo, config));
             decisions.AddRange(_importDecisionMaker.GetImportDecisions(mediaFileList, null, itemInfo, config));
 

src/NzbDrone.Core/MediaFiles/TrackImport/ImportDecisionMaker.cs

@@ -35,6 +35,7 @@ namespace NzbDrone.Core.MediaFiles.TrackImport
         public DownloadClientItem DownloadClientItem { get; set; }
         public ParsedAlbumInfo ParsedAlbumInfo { get; set; }
         public List<CueSheetInfo> CueSheetInfos { get; set; } = new List<CueSheetInfo>();
+        public bool DetectCueFileEncoding { get; set; }
     }
 
     public class ImportDecisionMakerConfig

src/NzbDrone.Core/MediaFiles/TrackImport/Manual/ManualImportService.cs

@@ -174,6 +174,7 @@ namespace NzbDrone.Core.MediaFiles.TrackImport.Manual
             {
                 DownloadClientItem = downloadClientItem,
                 ParsedAlbumInfo = Parser.Parser.ParseAlbumTitle(albumTitle),
+                DetectCueFileEncoding = true,
             };
 
             var config = new ImportDecisionMakerConfig
@@ -251,6 +252,7 @@ namespace NzbDrone.Core.MediaFiles.TrackImport.Manual
                     AlbumRelease = group.First().Release
                 };
 
+                itemInfo.DetectCueFileEncoding = true;
                 var decisions = _cueSheetService.GetImportDecisions(ref audioFiles, idOverride, itemInfo, config);
                 if (audioFiles.Count > 0)
                 {