diff --git a/pandora_client/__init__.py b/pandora_client/__init__.py
index 7c8c886..f926dbb 100755
--- a/pandora_client/__init__.py
+++ b/pandora_client/__init__.py
@@ -35,6 +35,7 @@ CHUNK_SIZE = 1024*1024
 default_media_cache = os.environ.get('oxMEDIA', os.path.join(utils.basedir(), 'media'))
 
 DOCUMENT_FORMATS = ('jpg', 'pdf', 'png')
+sync_extensions = ()
 
 def get_frames(filename, prefix, info, force=False):
     oshash = info['oshash']
@@ -222,7 +223,7 @@ class Client(object):
         conn.close()
 
     def load_plugins(self, base=os.path.join(utils.basedir(), 'client.d')):
-        global parse_path, example_path, ignore_file, encode
+        global parse_path, example_path, ignore_file, sync_extensions, encode
         base = os.path.expanduser(base)
         for path in sorted(glob('%s%s*.py' % (base, os.sep))):
             with open(path) as fp:
@@ -233,6 +234,8 @@ class Client(object):
                     example_path = module.example_path
                 if hasattr(module, 'ignore_file'):
                     ignore_file = module.ignore_file
+                if hasattr(module, 'sync_extensions'):
+                    sync_extensions = module.sync_extensions
                 if hasattr(module, 'encode'):
                     encode = module.encode
 
@@ -546,7 +549,7 @@ class Client(object):
             files = sorted(set(files) - set(unknown))
 
             for f in files:
-                if not self.scan_file(f, rescan):
+                if os.path.splitext(f)[-1] not in sync_extensions and not self.scan_file(f, rescan):
                     unsupported.append(f)
 
             if unknown: