We don't have a feature specifically designed to play music, yet. However, it is possible.
To do it properly, by streaming the music directly through your device, it's a bit technical (here is one tutorial I found https://www.picochip.com/how-to-play-music-through-mic-easy-guide-to-follow/). You can always enter from two devices (just make sure to have two different accounts).
A quick tutorial (source: Picochip):
- Go to the speaker icon on your taskbar and right-click it.
- Click on “Recording devices”
- A dialogue panel will appear. Select “Recording”
- Right-click on a free area in the and enable “Show Disabled Devices” and “Show Disconnected Devices”
- Once that is done, you should see “Stereo Mix.” Right-click it and then click “Enable.” Once you set it as your default device, you can use it on other voice programs and for streaming or playing music to others online.
However, if it's just for the waiting period whilst people are arriving, you can screenshare with audio on Chrome.
The disadvantage of this method is that the screenshare takes up most of the screen, so don't use it as background music for other activities.