-- sites/all/modules/contrib/jwplayermodule/integrations/int_filefield/jwfilefield_1.module
+++ sites/all/modules/contrib/jwplayermodule/integrations/int_filefield/jwfilefield.module
@@ -70,7 +70,7 @@
   foreach ($items as $item) {
     $p_item = array();
     $p_item["file"] = $GLOBALS["base_url"] . "/" . $item["#item"]["filepath"];
-    if (array_key_exists("duration", $item["#item"]["data"])) {
+    if (array_key_exists("duration", (array)$item["#item"]["data"])) {
       $p_item["duration"] = $item["#item"]["data"]["duration"];
     }
     $output[] = $p_item;