I think its, and correct me, someone, if I'm wrong, "We Fly High" by Jim Jones (?)
Ok, that is a pretty lame hype song and I could see how it doesn't have any real crowd appeal. But I also respect that the players aren't going for some cliche arena rock song. Leave those for the band or the PA to play.
To stay with something popular now and what the team would relate to, I'd go with Kanye West - Stronger or The Plain White T's - Our Time Now. "Our Time Now" has a great "Oh Oh Oh Oh Oh" the crowd (specifically the student section) could really get into. Especially if someone maybe remixed in some classic BU radio highlights over the verses. They're also from Chicago. Here's the song if you haven't heard it...http://www.plainwhitets.com/ourtimenow/