Slim Jxmmi Fights Guy in a DJ Booth

[[tmz:video id="1_ehpp8viv"]] 1:02 PM PT -- Sources close to Slim Jxmmi tell TMZ that the guy Slim swung on in the DJ booth was a lighting guy that had gotten into it with Rae Sremmurds own personal DJ (who we're told wasn't actually DJ'ing for the…