[thegillman]

The easiest thing for you to do would be to import the I/O settings from the demo session into the session that you can't hear. Obviously, if you can hear the demo from your headphones then your system works - there's just something wack with that particular session.

Open the demo session, go to Setups:I/O Setup, then export the settings (give them a name that you will be able to remember). Close the demo session, open your session that isn't working, delete all your I/O assignments in that I/O setup, then import the set you made from the demo session. Assign your tracks to the new analog outputs 1&2 and it should work. If it still doesn't work, then make sure that you haven't accidentally set your volume automation to zero on all the tracks. Otherwise I haven't got a clue...

Gills