@Amanda ,
You can do that by sharing sound from your computer in a Teams meeting.
To share sound from your computer, select Share content in your meeting controls and then Include computer sound—it's the switch on the top left of your sharing options.
For more details, please refer to this article: https://support.microsoft.com/en-us/office/share-sound-from-your-computer-in-a-teams-meeting-or-live-event-dddede9f-e3d0-4330-873a-fa061a0d8e3b
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