The Wired How-To Wiki has published an easy-to-understand guide describing how to download MP3s from streaming music sites. Using Firefox, Internet Explorer, Safari, File2hd, or StationRipper (the last of which can access Pandora.com, Slacker.com, and AOL Radio), you can easily grab downloaded MP3s that have streamed to your hard drive using the browsers’ caches or by using the software programs.
How to Download MP3s from Streaming Music Sites