Adding mute button to TTT end round music?

So, for the month of October, i set up an end round music player for my TTT server that plays Halloween themed music. Some players have been asking if I am able to make a mute button to mute the songs playing for them. Since I have minimal knowledge of lua, i was wondering if one of you guys could help me out. With a little help, i could probably do it myself, but i just need a push in the right direction. Thanks

Could you link us what addon you are using?

Where do you want the button? And if you have no knowledge how would you go hooking up clientsided sounds that activate after the rond ends?