Read only text values from APEv2 tags. (#2828)

NEWS.txt

@@ -18,6 +18,7 @@ Version 0.9.0beta1 - 2007-XX-YY
    * Always use musicbrainz.org for PUID submissions. (#2764)
    * Files/Pending Files count not reset/recalculated after removing files. (#2541)
    * Removed files still get processed during fingerprinting. (#2738)
+   * Read only text values from APEv2 tags. (#2828)
 
 Version 0.9.0alpha8 - 2007-04-15
  * New Features:

picard/formats/apev2.py

@@ -50,6 +50,9 @@ class APEv2File(File):
         metadata = Metadata()
         if file.tags:
             for origname, values in file.tags.items():
+                # skip EXTERNAL and BINARY values
+                if values.kind != mutagen.apev2.TEXT:
+                    continue
                 for value in values:
                     name = origname
                     if name == "Year":