No more audio on videos

Hi

It was working just fine. My video played from an URL with audio, just perfect, beautiful.
Then I had the brilliant idea to update from 5.6 to 5.6.1p4 and now there is no audio on my video from URLs.

Anyone knows what's going on?

I'm using 5.6.1f1, and also don't have audio playback.
I've resorted to adding an Audio Source component to my game object, playing an audio clip instead. There isn't much sync sound in the video clip I'm testing, so I can vouch if this keeps in sync well yet.