fix

server/djrandom/model/mp3.py

@@ -56,7 +56,7 @@ class PlayLog(Base):
         n -= 1                  # account for the target
         for plog in cls.query.all():
             if plog.prev:
-                hashes = plog.prev.split(',')
+                hashes = plog.prev.split(',')[:n]
                 if len(hashes) < n:
                     hashes.extend([None] * (n - len(hashes)))
             else: