Adding a turntable

Question

Hi all.
I'd like to add my turntaable to my system. I have two AUX RCA inputs- one in front and a rear which is hooked to my cable TV. Can I use the front input directly or do I need a preamp ? My system is 350 watts RMS.
I have an extencive vinyl collection and would like my daughter to hear some of the music from " Back In The Day " . Any help will be greatly appreciated.
Thank You for your time.
Ray