There are a couple of choices when it comes to using your WiFi internet radio to play your music collection; running a
music server and
streaming audio. The
Noxon iRadio can do either.

I use
streaming to play a random selection of my music library across our home
wifi network. It's possible to listen to the
stream via a computer on the
wlan as well as a device such as a
wifi radio.
Probably the easiest way of doing this is to use
WinAmp and its associated
SHOUTcast software.

Installing
WinAmp is straight forward enough. There are possibly better music and media players, but
WinAmp is reasonably easy to set up as a
streaming application.

In addition you need the
SHOUTCast DSP plugin for
WinAmp and
SHOUTcast Server. Both come with instructions on how to associate with
WinAmp. The
plugin is activated from
WinAmp's options menu, but the
server requires a little setting up via a .
txt file. The settings are all fully explained in the file, but do require careful reading.
The advantage of
streaming in this way is that you can play any music file format you like - or at least have the
WinAmp codec for - despite the fact that the
iRadio will only play a limited number of formats. For example, the
iRadio will not play .
flac or .
ape files, but
WinAmp/SHOUTcast transcodes the
stream into an .
mp3, or in my case,
AAC+/48kbps format for the
iRadio to play.
The disadvantage of
streaming is that it is not possible to effect a choice of what's played through the
iRadio. The music is directed by
WinAmp's playlist. However, it does mean that from time to time you rediscover the little gems hidden away in your music collection.
*See my hifi index here.