Exstream
Available in your Applications now.

A fantastic and very sleek music and video player, with support for all internet audio formats. Using the media libraries from amoebaOS, Exstream can play all of your favorite songs, podcasts, movies and more. It also includes support for internet song harvesting, which allows you to add songs to your library from YouTube and other popular media sharing websites.

Go to your /Applications/ directory and open Exstream, if it isn't already in your dock.