hello everyone, I hope your day is going well! ive searched through the forums and haven't found anything that suits my situation, so im sorry if this sort of thing has been gone over before, I'd just like personal type responces that are directly dealing with me and my setup and whatnot, so i hope theres no qualms about me making a new thread and it not being in the new members area seeing that this is my first post. yeesh, now that that is all out of the way... ill try to keep this very short and to the point. i have a macbook pro17inch, with the most up to date version of ableton with all the extras and bells and whistles. now, in my behringer xenyx x1222usb mixer's manual the implied idea that i got from the pictures and literature that i could hook a 3.5mm cord going from my headphones audio out jack on my macbook to the RCA in on the mixer. thusly giving me the ability to play a beat ive created on my korg emx drum machine and have the 1/4" jack out connected to the 1/4" jack in on the mixer, then having that sound go through the usb cable into my laptop then into ableton and through the effects, then out the 3.5mm headphone jack through the cable which has an RCA cable converter jack which is plugged into the RCA in on the mixer, then out through the main XLR into my speakers. sadly, once iver gotten the converter to hook up the 3.5 mm to the rca hookup on the mixer, i discovered thats not how it works. can anyone give me any insight to me on if i need an external soundcard or something of that nature to be able to get this setup to work? I would really love to be able to play music on my nady fwa speakers after i have routed the sound into ableton and through its effects...constantly wearing my headphones is beginning to become a bit tedious and i'd love to shake this house a bit with my speakers. thank you soooo very much to anyone that takes the time to read this and help me out.