I can't Mute Media Source

[mike200k]

Hello, I added a video to obs, now i want to mute the audio of the video, I cannot, after i have done the voice over and i stop recording, the original sounds from the video are still sounding normally. I want to mute the media source audio so that i can only hear my voiceover. Kindly help

I don't want the video sound when I am playing my video after i stop recording, just my voiceover.