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.
Oh I don't know, maybe while you're on the phone with a client you can look up something on the internet or an email they sent a verify something. That's just one example, I'm sure there's 1,000's more.
Funny how people try to justify some thing when it's not available. iPhone user's do this to, it's a two way street.