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 already have a few ideas in mind for something like this, again, only if the price is right though.... and somehow I really doubt it will be.
Though using this as a prototyping platform and then offering the ability to mass produce your product could be a very interesting business model for creator and this company.