Cortado doesn't work on Mac with Oracle JRE7 update 9

[ Upstreamed from https://bugzilla.wikimedia.org/show_bug.cgi?id=41274 ]

Playback never starts and the Cortado reports:

ERROR, Not allowed https://upload.wikimedia.org/wikipedia/commons/3/36/Mirror-Induced-Behavior-in-the-Magpie-%28Pica-pica%29-Evidence-of-Self-Recognition-pbio.0060202.sv009.ogv...

Full Cortado play log: http://bug-attachment.wikimedia.org/attachment.cgi?id=11217

(The stacktrace has to do with a cache file being in Mac OS X quarantine (mistake in the Oracle installer it seems)) (The oracle java plugin doesn't work with Chrome for Mac btw, since Chrome is 32bit only and JRE7 for mac is 64 bit only.)