You kind of have to wonder about the testing of these features. Did they only test in specific modes that don't cause the relay clicking (in which case, what are those modes), or did they not think that the frequent switching was annoying enough to address.
Fortunately I do use a squeezebox because that interface is so much more powerful than a simple directory tree. Speaking of which, I wonder if Logitech has considered licensing out the interface to the sqeezecenter software. Squeezecenter aware receivers would be nice.