Like most of us I have a large collection of mp3 songs on multiple hard disks on multiple PCs. And though a notebook is used here to watch movies on the big television, the facility to play mp3 files on my (I know, on my old but o so good sounding selfbuilt Wharfedale 5 loudspeakers) required a PC turned on and connected close to the amplifier.
I found an excellent solution in the Pinnacle Soundbridge HomeMusic device. Wireless audio streaming is what this device does. Nothing more (ok, internet radio also). Small, with a remote control, with good sound (mp3 and good sound, yea ..).
Documentation is bad and installation took longer then necessary without some helpfull hints in the documentation. Weird interface, no explanation, but once it is up, it runs fine! Recommended (if you like a little battle with unfriendly setup!).