[Perfectlap]

If you spend a great deal of time in an office or in front of the PC you should consider a portable Satelite radio. I have one that I plug into the back of my PC and listen to CNBC and Stern instead of slowing down my network with streaming audio. I'm not sure what the latest packages offer but when I signed up two years ago you had to have seperate subscriptions for each device.
I think double DIN is better for Satelitte because you can scroll through the channels before actually switching to them, like when you hit info on your Direct TV or cable tv. A combination GPS/MP3/Sirius would be excellent, I saw something similar in this girl's 07 E class Merc.