Songbird

Songbird is an audio player that offers many interesting features and can be easily adapted to your own needs. In addition to the standard functions of an audio player Songbird offers Smart Playlists, a Last.fm integration, a streaming client, media Import from iTunes, a web browser, etc.

Interesting is the add-on management, which allows Songbird to add other functions such as Media Flow or mashTabe. Moreover there are also a variety of skins (so called Feathers) available.