Problems with sound of a shared video - only the voice channel is heard, no background sound

[DeborahEstrada]

When sharing a video with my students, only the voice of the main speaker plays, and with poor quality. The background music, vocals, etc. are not transmitted. However, when enabling the 'leave computer audio' option (which mutes me and my students), the video plays normally. That is, I can't play the video perfectly if I enter the meeting with the computer's audio, just by disabling it. I tried several times in different meetings. BTW, I have also uninstalled and reinstalled Zoom.