Yes, there is a Doom-themed xylophone sound effect available.
Yes, there is a Doom-themed xylophone sound effect available.
You just got a demo of an old version of GZDoom and aren’t hearing any sounds. It looks like you’re using Steam, possibly in a multiplayer setting. There might be a live chat room for players to communicate during matches. The game likely supports multiplayer, so you could be playing with others. You might have been invited to a match or just testing the game.