Audio playback in headphones

a question about n-track recording

While I am recording a track I cannot hear it through the headphones or the speakers. The only time the track becomes audible is once it is recorded and I play it back. This makes it very difficult to record more than one track and near impossible to record things that are electric and plugged directly in. I checked to make sure that no audio outputs were muted and nothing is. Like I said, the track will play after recorded but before and during the recording it shows up on the input meter but does not come through the speaker or headphones (the track I am currently playing that is).

On the Vu recording display there is a monitor icon. ???

funny thing is mine only produces sound when this button is off! :p