Audio cuts out after a few minutes time and time again

I have a Macbook Air with Snow Leopard. I live in northern Canada and we use Facetime for piano lessons as the piano teacher using an iPad lives in another town.
The Facetime calls work fine for a few minutes, then the audio cuts out and the person on the other end cant hear us. We have to either restart Facetime or restart the computer. Last piano lesson we had to restart the call 5 or 6 times then we gave up halfway through the lesson.
I have read on the support forums that this has been an ongoing problem for well over a year and there is no sign of a fix.
We own over dozen Apple products (two iPod nanos, one iPod touch, two iPhones, an iMac, two iPads, a MacBook Air. two Apple TVs, an Airport Extreme, an Airport Express... we have been Apple fans for years after experiencing Windows and all its headaches... this reminds me of the old Windows days when I would spend more time fixing the computer than I would using it.
This is an extreme frustration because my sons education depends on this... by the way we have a fast internet connection and no other problems with the computer using any other programs... I have become disappointed in Apple as they have had plenty of time to fix this problem and they have not.
I want my 99 cents back, with interest.

James9865 about FaceTime, v1.0.2