PlaySound
Used to play in-game sounds and music.
You know that thing most admin plugins come with nowadays, when you can play some game sounds and everyone will hear it? Well, that’s that. Comes with a playable Orange Box soundtrack and Overwatch announcements, accessible through Options -> Sounds menu.
In Multiplayer, sounds played by admins will be heard by all clients; if a non-admin user plays it, only they will hear it. Yes, you can use it on other people’s servers to listen to some music while you’re playing.
The console command itself is "playsound soundnamehere", works just like default "play" command (for example: "playsound music/file.mp3"); use "playsound stop" to stop all sounds currently playing.