Loud music generally has to be turned down after 11PM. If not anything else, he's at least breached the student code of conduct that applies to most halls. So yes, the halls management can do something about it. They should be able to do something about him leaving rubbish everywhere, as well, due to it being a risk to your health and safety.
And as for the meat situation, I guess you might have tried this already, but in case you havnt, just ask him to put it on a plate on the bottom shelf. Anyone who knows anything about sanitory food conditions knows to do this.
But this SoB sounds like many a student I've come across in my halls...they've been pampered by their parents, have had to do nothing to gain anything they have, and have never been disciplined because apparently the sun shines out of their arse.