The physical dock it's self has nothing to do with the multimedia application. It is already on your phone. I use it every night as my alarm clock...here's how:
All it takes is a small magnet placed in the right spot on the back of the phone to produce the same EXACT image. Its as simple as that! I just put a little magnet on the back of the phone (left side, below the camera). I have a vertical belt-clip case for my Droid. The flap opens up to slide out the phone. I simply opened the case and set it upside-down on the desk. I then set the phone on the flap (the back of the case propped it up naturally.) I could then feed my charging cord throught the hole in the back of the case and right into the phone. VOILA! In the upper left-hand side of the screen, is displayed "Connected to Multimedea Station" in small letters for a second. All set!
To switch to car mode, reverse polarization.
Hope this helps for anyone that A.) doesn't want to spend $30.00 on a dock, or B.) can't seem to find one in stock anywhere!
P.S. The magnets on some phone cases may still have that effect on thwe phone--mine does! As long as you do not have your phone set to never timeout, you should be okay if this haphen pens. You still have to set it "never timeout" when rigging your own docking station.