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.
I thought that by moving the controls to the slide, they could actually make the screen bigger (to the lovely 4.8inch MID size). I also thought they saw what Apple was doing with there iPhone gaming network over 3G and would have added similar functionality (perhaps that is what the bluetooth will also do, to a special Sony phone of course). The dual analogue should have been a simple design change (if you want to play a FPS games on the PSP, you really want that second stick). The only thing for me, that would keep me interested in the device, would be touch screen, for better web browsing (and on screen keyboard).