Titles for streaming radio stations

I have a WD TV Live Plus which I’ve started using for listening to internet radio.  It’d be great if the title information from internet radio streams were displayed.  I’ve tried this with Digitally Imported and AddictedToRadio.  In both cases if I get the stream on my computer I get the track titles.  In the case of ATR, that may be because the streams open in a popup window.  But in the case of DI it’s a stream played in Winamp.  When I connect to a streaming radio station I don’t see the title of what’s currently playing.  Is there something about the stream the TV Live Plus hooks into that causes it not to have the track info or is it for some reason simply not displayed  In either case, why?

How is the Plus accessing these streams?