I'm still not back to my FJ (it's in Denver - maybe Friday) but I did just load the Zune software on my laptop and I've made another discovery.
When I plug my Zune into the laptop, I'm prompted to either wipe the device and reload or to connect as a guest. Since my home machine is my main machine with my music library, I choose Guest.
The Zune Pass will work on three computers, so I'm able to download new music onto the laptop and then sync it to the Zune device, which is nice I think. I also use
www.foldershare.com to keep a folder sync'd across my home machine, my laptop and the FJ Car Computer. At home I have a podcatcher running, dropping new podcasts into a directory that is sync'd across all three machines. The Zune software monitors this directory. So now even though I'm not at home, I can listen to my podcasts on any of my three machines or I can drag the podcast onto the Zune and have it sync to the device.
Here's what I can't do, or don't know how to do. I don't see a way to move content OFF OF THE ZUNE, onto my laptop. Since I have a Zune Pass, it isn't a big deal. I also can't play music that is on the Zune, on my laptop. I guess if I really wanted to play music from the Zune on my car computer, I'd just plug in the audio connection.
With the Zune Pass I'll just download whatever I want onto the FJ Car Computer and I won't even try to keep it in sync with my home machine or my laptop. With the foldershare and podcatcher, I can easily listen to my podcasts from any machine.
I really like the way this is working, especially since it is in effect integrated with StreetDeck since Zune tracks will play under Windows Media. I'm happy to answer any questions or try other experiments.