add discnumber

scanner/scanner.go

@@ -261,6 +261,7 @@ func (s *Scanner) handleTrack(it *item) error {
 	track.TagTitle = tags.Title()
 	track.TagTrackArtist = tags.Artist()
 	track.TagTrackNumber = tags.TrackNumber()
+	track.TagDiscNumber = tags.DiscNumber()
 	track.Duration = tags.DurationSecs() // these two should be calculated
 	track.Bitrate = tags.Bitrate()       // from the file instead of tags
 	//
@@ -282,7 +283,8 @@ func (s *Scanner) handleTrack(it *item) error {
 	// set album if this is the first track in the folder
 	folder := s.curFolder()
 	if !folder.ReceivedPaths || folder.ReceivedTags {
-		// the folder hasn't been modified or already has it's tags
+		// the folder hasn't been modified
+		// or already has it's tags
 		return nil
 	}
 	folder.TagTitle = tags.Album()