Reply to How to connect S4 and S2 together

Hi DJTT, me and my friend will have a gig coming up this 22. I am using S2 right now and my friend is using s4. We decide to be a team so will would like to play together. However after we mess up some connecting between S4 and S2 we managed to get the sound out but not quite clear. We using 2 macbook pro though. The problem is I cann't send the FX from s2 to s4 and is it anyway to make beatphrase work like connected between s4'song and s2'song. Please light me up. I'm kinda noob though and has been djing for 3 months.
Thank you in advance!