Meludia - Listening exercises and to sharpen your ear and music theory skills
Wohooo.net - Create Your Own Online Radio Station
GNU Solfege - GNU Solfege is free music education software.
Listen2MyRadio - Stop dreaming, start streaming. Free and premium Shoutcast and Icecast audio broadcasting.
Perfect Ear - A simple yet advanced application for improving your solfege skills.
SOUNDS - Discover music with friends