Ok, actually, I think I get what you are saying now. Since I don't have any kind of real stereo system I don't tend to think about having a nice system set up or wanting a receiver for dialing into internet radio stations.
I don't know anything about these, but I'm interested. Found this user manual
and some comments from another forum (here
) regarding the first one you linked.
I'm also willing to bet you can find just about everything you want to know on that forum.