audio and video from hdmi port

I use Zoom in a room where there are multiple people.  If I connect a large screen TV to the hdmi port on my laptop I can see video on it during the meeting.  I can hear incoming audio from other participants of the meeting.  However, if I play a DVD connected via the usb port I cannot hear any audio.   How do I get both video and audio to the TV via the laptop's hdmi port?  Is there an audio setting that needs to be turned on?

thanks