If I were you, I'd move on!!! If you submitted an application to them and have heard NOTHING so far, please accept the fact that you will not be called for an interview and will not be accepted to this school.
If they lack the respect of never providing any form of rejection to you, it would be wise for you to start putting more of your time and effort into researching other schools.
Furthermore, if you decide on reapplying for fall, 2009 cycle, I'd overlook LIU. Do you really want to reapply to a school that didn't have the common courtesy to respond to your application with either an acceptance OR denial?