iTunes with iPod library

One of the annoyances with iTunes and the iPod is that you need a music library to connect the iPod. I don't want to have a library setup. I want to just be able to plug in my iPod and listen to music as well as load tracks on to it. Sure there are some ways to do this like setting up a minimal library and using it just to connect a non-auto-sync iPod. That's a hassle I don't want to mess with. Because my iPod travels with me my iTunes library resides on an external drive which works reasonably well but there are times I just want to do an update at a coffee shop and be done. At least until we get the ultimate mobile system.