No audio in encoded Azure Media Services asset

I was following AMS walk-through at

And then when I'm trying to play that stream in my Windows Media Player (12.0.16299.64) I cannot hear audio. I chose HLS(v4) Streaming URL, because WMP is only able to play that and v3, it can't play "smooth streaming" or "MPEG-DASH". If I play through the portal, I can hear audio. I was able to hear audio before, but somehow it ceased to play.

What can I possibly be doing wrong? I can provide a streaming URL if necessary.