Fix parse error in updateSongs helper.
Fix parse error in updateSongs helper.

Since changing the default response to json instead of html,
the json is ready and does not need to be reparsed which throws
an error.

campaigns/whackandblite,tanuki/play,play/play,akarshsatija/play,kidaa/play,ojengwa/play,ojengwa/play,campaigns/whackandblite,campaigns/whackandblite,ojengwa/play,play/play,tanuki/play,akarshsatija/play,mailchimp/play,kidaa/play,akarshsatija/play,akarshsatija/play,tanuki/play,mailchimp/play,ojengwa/play,kidaa/play,play/play,mailchimp/play,play/play,kidaa/play,campaigns/whackandblite,mailchimp/play