Classical as in Shakespeare? If so, decide whether or not you want to do a comic piece or a dramatic piece and it'll be easier. For comedy look at As You Like It, All's Well That Ends Well, Love's Labour's Lost, The Comedy of Errors, Twelfth Night and Much Ado About Nothing. For dramatic ones look at Othello, Cymbeline, King Lear and Titus Andronicus.
Freshman year as an MT in acting, you do A LOT of Shakespeare, and it's amazing. So make sure you familiarize yourself with the man and his plays.
I auditioned last year as well, I totally bombed the audition, but it was a learning experience. The audition panel were nice but rather deadpan, so don't let that intimidate you. Be prepared to ask questions at the interview as well. The dance audition was definitely the hardest one I experienced. Last year they did a routinee for West Side Story since that was the musical they were doing the coming Fall. The dance instructor was really nice and she really wants to see acting within your dancing, even if you don't remember the steps entirely. Show enthusiasm!