Simple CEF to play custom mp3's in the background. The CEF autodestroys after the sound has finished to not use our beloved PC resources.
Copy client_packages and packages content in their respective directory, then import them.
You can put your mp3's inside client_packages/Sound/sounds/ and trigger them with their filename. Only mp3 is supported right now, although ogg works as well, it's easily exchangeable and/or extensible to allow for both.
As of right now, you can play a sound with the "/playsound NAME" command. You can use this as you want, this is only a barebones example to show how it works.
I have not experimented when it comes to max sound length / filesize. I'd like to know though