Such as that stadium echo issue or why network streaming is treacherous?
I'll skip that talk and tell you that http://danbeahm.blogspot.com/2012/02/best-wifi-streaming-music-setup.html is worth reading as it covers multiple speakers and might avoid the stadium delay effect to some extent.
I've lost count of folk that didn't get it.
I want to stream audio from my mac to multiple sources without breaking the bank. Sonos is too expensive and from what I can tell the airport express can only stream iTunes content (not pandora, etc.).
Any suggestions on other products is extremely helpful.
Also I need to stream across my house and to 4 or 5 devices with 3.5mm connections.