Can't seem to get Cakewalk to recognize my Alesis Multimix 6 USB board

  Hello All, I have been at this two days now without any luck. I just got an Alesis Multimix 6 USB mixer (as described, it plugs into the computer via usb), but can't seem to get my Cakewalk Producer to recognize the board. That is to say, it is all plugged in, but I don't get any signal from the Alesis to the tracks in Cakewalk. Any help would be appreciated. Thanks, James