Roughly speaking, podcasts are to blogs what radio is to newspapers. And iTunes is the largest directory of podcasts available. There are thousands of audio programs being created every week and, while most of it is not suitable for classroom use, there are also some excellent materials that are. The collection includes a large number of programs from public radio, from both the US and other countries. You’ll also find a variety of programs produced by teacher for teachers as well as student-created programs. To use iTunes, you must download the application (free for both Mac and Windows) and install on your desktop. You can then use the interface to find, manage, and play the podcasts (no iPod required).