Q: I would like to be able to hear the same music (“Now Playing”) at home and on the road. The songs and playlists on my fourth-generation iPod touch are exactly the same as the ones in iTunes 10.5 on my Windows 7 laptop. What I want is to be able to seamlessly be able to have the music on my laptop pick up where I left off on my iPod when I walked in the door and the Wi-Fi kicked in. I also want to be able to do the reverse… have…