How to enable sound macro?


I’ve add macro and set it with audio (play once). File was uploaded successfully, i can play it. But when i see my macro, or any visitor see that macro, no audio was played.

I found an example on phabricator here and see the config macro. That page played the audio.

Do i need extra configuration to play my macro audio when someone see it? or do i need to clear some cache? any settings did i miss?

Thanks in advance.