diff --git a/unsync.py b/unsync.py
index eaa94dc..72e986b 100755
--- a/unsync.py
+++ b/unsync.py
@@ -68,7 +68,10 @@ def shouldsync(md):
     rating = G(md, 'rating')
     sync = G(md, 'sync')
     if rating != None:
-        rating = int(rating[0])
+        try:
+            rating = int(rating[0])
+        except ValueError:
+            rating = None
     if sync:
         sync = sync[0].lower()
     else:
@@ -82,15 +85,36 @@ def shouldsync(md):
         return True
     return False
 
+def fixmetadata(md):
+    if 'artist' not in md:
+        md['artist'] = "Unknown Artist"
+    if 'album' not in md:
+        md['album'] = "Unknown Album"
+    if 'title' not in md:
+        fn = os.path.basename(md.path)
+        fn = os.path.splitext(fn)[0]
+        # TODO: attempt to infer trackNum/diskNum from fn
+        md['title'] = fn
+
 def findmatching(haystack, needle):
+    # TODO: don't match mismatched lengths (Xing?)
     artist = G(needle, 'artist')
     album = G(needle, 'album')
     title = G(needle, 'title')
-    for match in haystack:
-        if artist == G(match, 'artist') \
-          and album == G(match, 'album') \
-          and title == G(match, 'title'):
-            return match
+    match = None
+    for hay in haystack:
+        if artist == G(hay, 'artist') \
+          and album == G(hay, 'album') \
+          and title == G(hay, 'title'):
+            match = hay
+            if match.seen:
+                # TODO: check other tags and filename and such?
+                print("Warning: duplicate match found:", file=sys.stderr)
+                print("{0} by {1} from {2}".format(artist,album,title), file=sys.stderr)
+            else:
+                match.seen = True
+                break
+    return match
 
 def run(args):
     if not len(args) in (2, 3):
@@ -108,26 +132,35 @@ def run(args):
     for p in paths(indir):
         md = mutagen.File(p, easy=True)
         if shouldsync(md):
-            if inonly: print(p)
-            else: tosync.append(md)
+            if inonly:
+                print(p)
+            else:
+                # TODO: don't use custom members on external metadata class
+                md.path = p
+                md.seen = False
+                fixmetadata(md)
+                tosync.append(md)
 
-    if inonly: return 0
+    if inonly:
+        return 0
+    # TODO: don't print anything
     print("Beginning matching...", file=sys.stderr)
 
     outdir = args[2]
     for p in paths(outdir):
         md = mutagen.File(p, easy=True)
         match = findmatching(tosync, md)
-        # TODO: don't print anything
-        # TODO: don't match mismatched lengths (Xing?)
-        # TODO: update important tags on mostly matching files
-        # TODO: don't sync files that wouldn't match!
-        # TODO: convert files in loop that works on altered tosync
         if match:
-            print("MATCHING", p)
+            print("UPD", p)
+            # update tags here if updatemetadata returns true
         else:
-            # TODO: just delete missing ones here
-            print("MISSING", p)
+            print("DEL", p)
+            # delete files here
+
+    for md in tosync:
+        if md.seen:
+            continue
+        print("ADD", md.path)
 
     return 0