does anyone know if there is a difference between a audio engineer and a music producer? if so whats the differnce if any?

In the "major label" sense, a producer is equivalent to the director of a film - he's calling the shots for the songs (arrangements, sounds, tone), he's also choosing the studios, the engineers, and conducting the session - the producer may or may not know much about the technical aspects of gear or handling the console, so they'll work closely with the engineer in those aspects. During a session, the producer is the captain of the ship and the engineer is first officer. In an interesting twist, the producer is generally chosen by the label, but is really an employee of the band, since the band is paying the producer out of their recoupment.

Outside of the "major label" definition - the lines becomae more blurry, since often the producer is also the engineer....
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Bruce Valeriani - Mix Engineer

And occasionally, the "producer" isn't an engineer OR a producer.

In the same way that I don't watch "E.R." and then call myself a doctor.

P.S. - Hi, Bruce.
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John Scrip - MASSIVE Mastering