apart from the fact that you have resurrected a thread that (as well as the software it's dealing with) has been dead for years, you don't seem to have a clue what Radio Snooper really is.
Radio Snooper is just a porting of Bonjour on PC.
No, it isn't. Radio Snooper, like bregent already stated, is a packet sniffer which tries to discover audio URLs of internet radio stations. It doesn't have anything to do with Bonjour, but uses UPnP to discover the SoundBridges. For details see http://soundbridge.roku.com/support/dwnld_radiosnoop.php
Roku did not do anything special to create Radio Snooper.
I suppose that they at least paid the members of DonationCoder.com
for developing an extended Roku branded version of URL Snooper
Bonjour does it all.
Does it really? What do I have to do to make it discover audio URLs?
I have two Soundbridge Radios. I can access them at will from both my Macs, and also from Windows XP running under Parallels.
I have six SoundBridges and my family and I can access them all from our PCs, tablets and smartphones. None of our devices has Bonjour installed, the wizards we use are called web interface, web browser, UPnP, and DLNA.