Music Player

Hello Everybody (:

I need a Music Player that have at least few of this features:
1. Can play song after song (automatically)
2. The admin will be able to create playlists (like “progressiv”, “heavy” and stuff like this)
3. The site visitors will be able to choose playlist (could be nice if there’s kind of feature)

and 4 it’s not have any connection to the player abilities,
I just need to know how can I do that if the visitor move between pages, the player wouldn’t stop playing.

Thank you all in advance!