SHOUTcast or Icecast server?
What is a SHOUTcast stream hosting? What is a Icecast stream hosting?
SHOUTcast (or Icecast) stream hosting – this is a service that allows you to deliver your recordings to listeners. We broadcast your shows to listeners who can access them via any supported media players such as Windows Media Player, Winamp, iTunes, RealPlayer. Links to live broadcasts are available in the control panel.
When using SHOUTcast, your station gets listed on http://shoutcast.com/ directory – this will likely lead to you getting more listeners for your station.
When using Icecast, you’ll get listed on http://dir.xiph.org/ – which is less popular than the SHOUTcast directory.
SHOUTcast and Icecast are both streaming server applications. Unless you’re doing anything really exotic, those essentially serve the same purpose. If you are not sure what to choose, take Icecast.