If it wasn't hard enough for dedicated music streaming products to carve out a niche for themselves, things look to be getting even tougher.

Apple's Air Play is building some momentum in the press and adoption by industry players. Even without looking toward future products or those already announced and just shy of shipping, now we have firmware updates to released hardware to bring Apple streaming compatibility. Denon is going to issue an update for a receiver they released back in April to support Air Play.

I'm guessing once you have WiFi that the rest is all a matter of software. This could end up being quite ubiquitous.