Sharing audio from a MP4 file

I want to share a video, an MP4 file on my local machine, and have the audio come from the video, not my microphone. From the comments I have viewed, this does not seem possible with Jitsi. My only choice seems to be to send the audio to my local speakers to be picked up by my microphone, which unfortunately would pick up local noise. Am I missing something.

if the client is Debian, check the following post:

Tip: how to share any video on a Jitsi session