Amua is a status bar application for Mac OS X that allows you to play Last.fm web-radio streams. It is an alternative to the official Last.fm player.
Wonder which song is playing? Just move over the note icon on top right of your screen without switching away from what you're currently doing. A click on the icon displays the Amua menu where you can control your radio stream and send the usual Love/Skip/Ban commands.
Alternatively you can detach the song information panel and drag it somewhere on your screen, such that you can always see what is playing.
