[SOLVED] Help with recording with my ERGO K

Hey guys

Looking for a little advice to do with my set up.

Upgraded my Traktor pro 2 and everything is working great, and have been playing a number of sets in around different venues no worries.

My problem is I want to record some sets when playing at home to listen back and edit etc however it wont let me.

I have speakers set up through rca to 3.5 jack into my ergo. 

Do I need to have a different bit of hardware to record from this to my laptop? if so what would be a good option for this?

If not - Can someone give me advice on how to set this up so its recording a mix to my laptop?

Thanks in advance guys