Let the hive mind of Engadget get that for you.
"For a long time I have been searching for a portable device where I can store all of my CDs in MP3 format and stream the songs wirelessly to my HiFi system. The portable device must I've tried FM transmitters, they all suck. I don't want a docking station. Any help? Thanks!" have a display so that I easily can scroll through the playlists (I don't want to use a TV or monitor). I suppose that there must also be a second device that is connected to the HiFi system that would receive the wireless streams from the portable device.
In other words, the wi-fi, e-books, mp3, video, (PMP, basically) is all extra. The stylus? it's there so that you can look up chinese/japanese han-zi characters by writing them on the screen instead of having to look it up the old fashioned way - try to get the dictionary to recognize that when writing on the screen with your fingertips.
looks like the stylus is not so 1996 after all...