The title clearly indicates the issue, but it keeps disappearing from the final output.
Go Preferences > General > and turn off both "Close media files when not active in application" and "Close audio and MIDI ports when not the active application."
After rendering the video, it lacks audio. Edit: I also recommend sticking to your own topic.
It includes sound but it cuts off abruptly. I can share the file link you mentioned—it had a high-pitched voice edit and was intense, so the audio quality dropped. Here’s the link to one I uploaded: https://www.youtube.com/watch?v=NkhZZRkqyUY