HiDownload Pro

HiDownlod Pro can handle all popular streaming formats, including Windows Media, Real Audio, Real Video, .flv, QuickTime, and streaming MP3 (Shoutcast). There's even a built-in podcast manager for scheduling podcasts to be downloaded. Particularly useful is that it integrates with your browser, so when you play many file types from your browser, they will be automatically downloaded and saved.

--Preston Gralla