Is there a mixer of choice some of you would recommend to add to my editing set up? I just want something to be able to control my playback monitors and to use with either Garageband or Soundtrack Pro or for doing voice over work. I keep hearing you can't use an external mixer for FCP but I always see images of mixers on the editor's desks who are using FCP, in various magazines I subscribed too. Right now I am running unbalanced audio from my Behringer monitors. I was told by the folks at Guitar Center that I would need to have a mixer or an audio interface in order to run balanced audio to the monitors. Currently I am getting a nasty sounding hum and I even purchased brand new cables that helped but the hum is still there.