somebody please help me because I can't hear sound from my computer set up! here is what I want to do. I want to have my mac g4 set up so I can listen to the signals coming out of it and also record my Dj mixes into it. I have a dj set up with a 4 channel american audio mixer, a numark dual deck cdplayer, and 1 turntable. I also have an m-box by digi design connected to the back of my mac through a USB cable and a behringer mixing board (eurorack ub802) to regulate ALL of my signals. right now I have it connected to the best of my ability, unfortunately my ability only goes so far when it comes to technical things like this. in other words... i cant hear ****. somebody please help.

I would start by disconnecting all the accessories you have and seeing if you then had sound. OK, then add piece by piece back and see where the sound fails. Bingo! You've got the problem.