lame

I've been trying to setup a drupal based podcast site for a friend of mine's show for a while now.
I've recently figured out that the method of concatenation of the different segments doesn't produce a clean mp3.

Since I now have to adjust my scripts, I was wondering what the optimal encoding settings that the audio module (and the flash players ) prefer using lame.

I think I remember that I saw that the flash players can only handle 44khz mp3s? is that right?