Newbie help identifying audio already used

[Elusien]

If you want to extract (detach) the audio track from a video see here:

Trying to split audio

Hy, so I’ve been recording gameplay using geforce experience, when I select two tracks, I go and listen to my mp4 recording without Shotcut, and I hear my voice, when I open it in Shotcut, I hear the game. If you could tell how to separate both audio tracks I would really appreciate it. Thanks