sound tripping

Whenever I came across people having their headsets attached to their ears, sometimes I wonder what do they actually get from it, aside from hearing their favorite tunes for the hundred times in less than two hours. Or maybe, I am just being old that technology and fad doesn't get along with me not like before, blame it to my stereo type likes and the fear of embracing new things, that I think would just probably make my life more complicated. Anyways, one of those people that are into downloading songs from iTunes to her ipod is my sister. A college student whose into the latest fad and technology, whenever there is a new item released by this so called technology crazed companies, expect her to have that on her hand, sooner or later, be it from her own savings or were asked from our parents.
Actually, she is the one who told me about this iTunes Tagging with these high definition radio. At first, I was clueless on what this new thing is all about, but she explains that it is just like this am/fm radios that we are used to but only is presented in a digital manner, meaning, more clarity and expect it to be in its highest definition, that is tagged with iTunes! So technically, its just like having your gadgets more and new radio stations that you can actually choose from.Sounds cool right?