iRadeo offers an easy to install internet radio service to be installed on websites. The setup simply happens by uploading music or audio files. After doing so a web player is generated to be installed on sites. The player may be customized by colors and an own logo. The fact that there is no limitation regarding the number of listeners makes it a most comfortable solution.
A new list of website player and playlist sharing services is available at FOLDEN.INFO. At website player there are services listed with online storage and pure website player to become embedded at other sites and for music sharing. The playlist sharing services may allow uploads or to generate playlists by an existing music pool. Most of the services do offer widgets to share the player and music at third party websites and social networking sites. Here is the link to Website Player and Playlist Sharing.