I have a trane xe80, and winter is starting. I turn on the thermostat and the furnace turns on, I see it light up and gas and such are burning. The problem is that no air is flowing through the system and not blowing into the house. What can I do to get the aire blowing again?

Check out the blower motor ,see if its stuck or hard to turn by hand,, also set the tstat to fan/fan only, does it work then,, if not you may either have a bad blower motor or possibly a bad capicitor which is need to start up fan motor
,, let us know what you find