PeerCast is a simple, free way to listen to radio and watch video on the Internet. It uses P2P technology to let anyone become a broadcaster without the costs of traditional streaming. This means you get to hear and watch stations not normally found on commercially funded sites.

Features:

• Stream MP3, OGG Theora/Vorbis, WMA, WMV and NSV.
• Low memory footprint and CPU load.
• Support for all popular media players, WinAmp, XMMS etc..
• Works through firewalls, routers and NAT.
• Windows', WinAmp, Linux and Mac OSX clients available.
• Open source