Messenger Rooms allows you to share your screen, but any audio will be picked up by your mic. When hosting a meeting, click on Share Screen, and when the pop-up window appears, choose what you want to share—it may be your desktop, other programs or apps you may have open, or a tab on your browser. (If you’re using YouTube, for example, you can share that and have it play music videos during your party.) Then, on the bottom left, check on Share Computer Sound to enable a second audio input from your computer—the music and your voice. For cleaner sound, you can connect a pair of headphones so your computer’s microphone doesn’t pick up any of the music. To adjust the volume of both inputs, you can click on the arrow next to your microphone on the bottom left of your screen, and go to Audio Settings.