Do not overwrite pre-existing tags when adding.

1 files changed, 1 insertions, 1 deletions

diff --git a/omptagger b/omptagger
index 7f6d853..7494933 100755
--- a/omptagger
+++ b/omptagger
@@ -389,7 +389,7 @@ class MP3 < Metadata
           TagLib::String::UTF8)
         frame.text = value
 
-        metadata.add_frame(frame)
+        metadata.add_frame(frame) if metadata.frame_list(field).empty?
       end
     end