share screen problems

[ch49]

Several times recently I joined Zoom meetings where the person shared some short meditative songs.  I could not hear the music, although I saw the images on the screen.  Everyone else on the Zoom could hear it just fine.  And then the other day, I was hosting a Zoom and one of the attendees couldn't hear the song I screen shared.  She had been on my Zoom calls dozens of times and we've never had this happen before.  Is there a setting I need to adjust or an update I'm missing?  Help!