I recently started downloading podcasts of Italian lessons to my iPod and it is working very well. I can listen to the podcasts while I am taking a walk or traveling. Of course, people look at me oddly since I am talking to myself while I walk. There are a bunch of free podcasts you can subscribe to at iTunes if you have an iPod.

Many sites other than iTunes also offer free and subscription based podcasts. I subscribe to the free ones and if I like them I either make a donation to that organization or if they have a higher level subscription rate that adds value I will buy that.