Which Wireless-Speaker System is Best for You? - WSJ

A high-level wireless speaker market overview

"Choosing the right system, however, isn’t easy. Before you buy any speaker, you need to decide which wireless ecosystem you’re going to commit to (each with its own compatible speakers)—kind of like deciding between VHS and Beta decades ago. Sonos and AirPlay, for example, have been around for over a decade. But others, like Sony HomeShare and DLNA, are all but defunct. And although these protocols all have largely the same functionality, there are subtle differences among them. Here’s a guide to finding the one that best suits your needs."

Which Wireless-Speaker System is Best for You? - WSJ