RadioRec is a project to create a graphical media center alike interface to netradio dumping using slightly modified xmltv. It is written in java, but uses python for grabbers.
MPlayer is used for dumping the streams
A modular audio programming language, designed to write applications quickly. Its main goal is real time audio processing, but it should be used for any kind of development.
This is a simple Python script to save streaming mp3 data.
I've tested this script with my.mp3.com and www.shoutcast.com.
See homepage for setup instructions under GNU/Linux and Windows.