On my 96 legacy wagon LSI, the air ducts wont seem to move. For example when I want the A/C or heater on it will only blow from the defrost position. If I press on any other vent option other than the defrost one, I can hear some mechanisim clicking and wanting to change the directional blow of the air but it never does. Was curious if anyone knows where this thing is located so that i can unstick it? any suggestions hope this makes sense b/c I am not mechanically gifted here...

If you hear something moving when you push the buttons, it's possible the linkage is disconnected. Stick your head under the dash on the driver's side and have someone push the buttons on the hvac unit, and see if you see any levers move on the air box behind the stereo.