SwingFish

The screenshot really says it all. (Hint: Look at the little window.) SwingFish downloads songs from Grooveshark as you play them.

Features

Download

As with MPlayer, check your local laws before using this app.

Download it now. (Requires OS X 10.5 or greater.)

Windows/Linux

SwingFish is not compatible with Windows or Linux. Check out Groovedown which can download songs from Grooveshark on those platforms.

Donate

If you like SwingFish so much you want to show your love, it would mean a lot to me.

Screenshot

screenshot