Airport Express: speakers go silent
I have a very simple setup: an Airport Express is connected to an old-fashioned stereo box, which leads to a pair of non-digital speakers. I play music from iTunes on a MacBook Pro.
My problem is that, every once in a while -- usually after a few hours of music, but sometimes sooner -- the speakers go silent. It's hard to tell what's wrong but it seems like the Express box is the problem. The sounds sometimes return after a few seconds; if not, I need to do something like un-select and re-select the Express speakers in the iTunes menu. If that doesn't work, I get antsy and reboot the Express, which also works (but takes a while)
Does anyone have experience with this type of behavior?
PS - The Express firmware is up to date.
MacBook Pro, Mac OS X (10.6.8)