In the Orkut group Livros em mp3 you’ll find links to audio books and video to download (you must be a member of Orkut).  Perfect in case you’re running out of practice Portuguese material to throw onto your iPod.  In there, you’ll even find links to advanced Portuguese lessons.

One of the more interesting links I found was to Loquendo, it’s a computer synthesized voice service.  The website offers a free example.  It’s not too bad.