spool.fm is another online jukebox similar to imeem, radio.blog.club, blogmusik, and seeqpod. spool.fm doesn’t require registration (but if you want to create your playlists, you’ll need to register) and it’s somehow integrated with last.fm which gathering possible related music automatically and display them in “now playing” tab.
with “listening with a friend” feature, it’s easy to send your friend a link to a specific song, for example everything i cannot see by charlotte gainsbourg. there’s also a synchro button which will allow you and your friend to listen to the same track simultaneously and that’s kinda cool. sound quality is a bit low though.