diff --git a/data/users/content.json b/data/users/content.json
index 226dd8a..e89fce2 100644
--- a/data/users/content.json
+++ b/data/users/content.json
@@ -16,7 +16,7 @@
   "permission_rules": {
    ".*": {
     "files_allowed": "data.json",
-    "files_allowed_optional": ".+mp3",
+    "files_allowed_optional": ".*.(mp3|flac|wav|msgpack)",
     "max_size": 50000
    }
   },
@@ -24,4 +24,4 @@
    "sirenyc@zeroid.bit": {"max_size": 1000000}
   }
  }
-}
\ No newline at end of file
+}