Help with Speaker System and Dock

So first of all I am new to this forum so hi everyone!!
Anyways...

I just got a iLive ipod dock bar speaker, and I previously had an ihome. I also had some altec lansing speakers hooked up to the ihome. My problem is that I had the ihome input into the subwoofer of the speaker system through a normal male cable, and now I do not know how to hook up the bar speaker to the speaker system as there is no output jack for a normal male audio cable. However it does have RCA input outputs. Can someone help me? the Altec lansing model is XA3021.

Thanks
Ben