This is my first sign-in and and post; I have been searching all the forums about this for a long time, and nothing ever seems to get worked out with this problem. SO, after a ton of trial and error on my own, I have come across something that actually appears to be working for me.
Quick system info:
Airport Extreme running dual wireless networks for Apple TV, iPhones, iPad, laptops. Ethernet connection from this Extreme strung haphazardly through windows and up side of house to older Airport Extreme (looks like a boob) for a 3rd Wifi network. Old iBook G4 with 50,000+ songs in iTunes (7.4.2) library connected to 3rd WiFi network. iTunes on this iBook playing continuous random shuffle of the entire library, streaming to an older Express which is connected to a receiver and speakers. Basically I just want this library to always be playing and shuffling as I have so much music. When I turn on the receiver, I want to hear music playing. Simple. Well, I was having the usual dropouts, or iTunes would get hung up and stop the stream, whatever. After I couldn;t think of anything else to try, in the speaker-selection area at the bottom right of the iTunes window, instead of just choosing the Airport Express for the stream, I chose Multiple Speakers so it was going to the iBook AND the Express (muting the speakers on the iBook).......
......been steadily streaming now for several days without so much as one dropout. Constantly. I think I win.