Here is a list of some of the best places to find auditions online in the NY/NJ area

www.actorsaccess.com
(This is the best/most legit site out there)

www.nycastings.com

www.castingnetworks.com

www.backstage.com
(Or you can buy the backstage newspaper)

www.mandy.com
(Click New York/New Jersey and then Castings)

www.playbill.com
(Click Job Listings in lower left hand side…Mainly theatre)

www.craigslist.com
(Click New York City and then TV/FILM/VIDEO But be careful on this site as there are also a bunch of scams mixed in)

www.nowcasting.com
(Not sure how good this is, proceed with caution)