Apple is in negotiations with music labels in an effort to bundle an “unlimited download” option with its iPod and iPhone. For either a one time fee for the life of the device, or a monthly subscription, owners of the “i” devices will have unlimited download access to the iTunes store (or at least the labels that agree to the terms).
I love this idea and would definitely purchase the service as an add-on to my iPod. Heck, if I had to buy a new one just to get this, I would. I hope they try to get access to the audio books as well, since I’m a big fan.