If you tire of your own personal Top 40 songs, you can use the iFM to plug in and tune in to the Radio’s Top 40. The iFM actually wakes up the embedded Apple radio control software on your iPod. A free download on the Apple store of Griffin’s application and you are good to go. It has the ability to compose preset favorite stations and tag your favorite songs so you can purchase them. Available soon for $40 on Griffin’s site.