DIY Squeezebox speakers from old router?

Hi everyone (and probably sorry for the noob questions to follow),

I have a Squeezebox Radio set up in the living room and stumbled across this how-to on turning an old Router plus usb sound card into an internet radio.
www[dot]tinkernut[dot]com/2010/08/30/how-to-make-a-cheap-wifi-radio/
I wondered, if you could use the same setup to build a set of wifi speakers to stream directly from the squeezebox.

I would like to cut out the PC completely, since there is no mp3 streaming involved here.
All that should be transmitted is the current station played by the squeezebox (which again I can control with the official smartphone app).

As I understand it, there is no DLNA-support for the squeezebox, so maybe someone knows a software to do the job of (even better) had the same idea and succeeded?

thanks so far!
mrcw