ipod podcast question..

So I’ve got this 1gb ipod shuffle.

It works great, I use it to listen to a few tunes, and mostly npr podcasts at work.

I subscribe to about 30 podcasts, and I always have several hours of good content to listen to at work.

I want to set it up so that itunes will just download the most recent podcast, and put it on the ipod, and delete the old one from my ipod.

This way all I have to do is throw the ipod on the dock when i get home from work, and not have to worry about it.

Its getting to be a bit of a pain in the ass setting up a playlist every morning at 530 when i could be sitting on my ass drinking coffee.